The Weights and Measures Act

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CHAPTER 340
THE WEIGHTS AND MEASURES ACT
[PRINCIPAL LEGISLATION]
Arrangement of Sections
Section Title
part i
PRELIMINARY PROVISIONS
1. Short title.
2. Interpretation.
part ii
STANDARDS
3. Units of measurement.
4. National Standards.
5. Procurement of Secondary Standards.
6. Custody of Secondary Standards.
7. Periodic verification of Secondary Standards.
8. Cancellation of Secondary Standards.
9. Standards equipment.
10. Working standards.
part iii
USE OF WEIGHTS AND MEASURES IN TRADE
11. Weights and measures permitted to be used in trade.
12. Sale by metric carat weight.
part iv
DISTINCTIVE MARKS
13. Stamping of weights and measures with denomination.
part v
ADMINISTRATIVE PROVISIONS
14. Appointment of Commissioner and inspectors.
15. Functions of Commissioner.
16. Duties of inspectors.

enomination.
part v
ADMINISTRATIVE PROVISIONS
14. Appointment of Commissioner and inspectors.
15. Functions of Commissioner.
16. Duties of inspectors.

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THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
part vi
INSPECTION OF WEIGHTS AND MEASURES
17. Appointment of Weights and Measures Committee. 18. Testing facilities for approval of patterns. 19. Verification of weights and measures. 20. Just weight and measure. 21. Stamping of verification mark, etc. 22. Request by inspector to examine, test or retest weight, measure, etc. 23. Rejection of weight, measure, etc. 24. Illegal stamping. 25. Restriction on inspector buying, selling or adjusting weights, measures, etc. part vii
SALE OF GOODS BY WEIGHTS AND MEASURES
26. Sale by net weight or measure only, etc. 27. Exceptions. 28. Inspector may weigh or measure pre-packed goods. 29. Presumption of nature of goods. 30. Weighing, etc., operations to be in presence of purchaser. 31. Safeguards to traders. part viii
OFFENCES AND PENALTIES
32. Falsely representing pattern to be approved pattern. 33. Offence in connection with inspectors. 34. Forgery of stamps on measuring instrument or measuring system. 35. Use of unauthorised weights or measures in trade. 36.

nnection with inspectors. 34. Forgery of stamps on measuring instrument or measuring system. 35. Use of unauthorised weights or measures in trade. 36.

Use of false or unjust instrument. 37. Making or selling unjust weights, measures, etc. 38. Sale of unstamped instrument. 39. Fraud in use of weight, measure, etc. 40. Obstructing inspectors, etc., in performance of their duties. 41. Prohibition of giving short weight, measure or number. 42. False declaration as to measure. 43. Sales by unauthorised denominations. 44. Attempt, aid or abet. 45. General penalty. 46. Power to compound offences.

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THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
part ix
MISCELLANEOUS AND SUPPLEMENTARY PROVISIONS
47. Evidence of possession.
48. Powers of inspector.
49. Judicial notice of documents.
50. Forfeiture.
51. Acts or omissions by managers, agents or employees.
52. Burden of proof.
53. Saving of civil remedies.
54. Compliance with prescribed measurement standards.
55. Regulations.
56. Power to amend Schedule.
57. Repeal and savings.
SCHEDULES

civil remedies.
54. Compliance with prescribed measurement standards.
55. Regulations.
56. Power to amend Schedule.
57. Repeal and savings.
SCHEDULES

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PART I
PRELIMINARY PROVISIONS
1. This Act may be cited as the Weights and Measures Act. 2.–(1) In this Act, unless the context otherwise requires-
“approved pattern” means a pattern of any measuring
instrument or measuring system approved by the
Commissioner;
“Commissioner” means the Commissioner of Weights and
Measures appointed under section 14 of this Act;
“Committee” means the Weights and Measures Committee
appointed under section 17;
“container” means any form of packaging of goods for sale
as a single item, whether by enclosing the goods wholly
or partly;
“correct” in relation to a weight, measure, measuring
instrument or measuring system, means correct within
such limits of error and with such sensitiveness as may
be prescribed;
Short title
Interpretation
Acts Nos. 8 of 1983 Sch.;
13 of 2016 ss. 42
and 43
12 of 2019 s. 44
12 of 2023 ss.78
and 79
GN. No.

s as may
be prescribed;
Short title
Interpretation
Acts Nos. 8 of 1983 Sch.;
13 of 2016 ss. 42
and 43
12 of 2019 s. 44
12 of 2023 ss.78
and 79
GN. No.

38 of 1983
CHAPTER 340
THE WEIGHTS AND MEASURES ACT
An Act to revise and consolidate the law relating to weights and measures
and to provide for the introduction of the International System of Units
(SI) and for related matters. [15th May, 1983]
[GN. No. 59 of 1983]
Acts Nos. 20 of 1982
8 of 1983
13 of 2016
12 of 2019
12 of 2023
GNs. Nos
38 of 1983
184 of 1984
128 of 1996
725 of 2018
12 of 2023

GN. No. 59 of 1983]
Acts Nos. 20 of 1982
8 of 1983
13 of 2016
12 of 2019
12 of 2023
GNs. Nos
38 of 1983
184 of 1984
128 of 1996
725 of 2018
12 of 2023

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THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E.

a. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.77
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E.

2023]
“custodians” means the custodians of the Secondary
Standards referred to in section 6;
“error” in reference to a measuring instrument or measuring
system may include deficiency in sensitiveness;
“General Conference” means the General Conference of
Weights and Measures convened by the International
Bureau of Weights and Measures;
“inspector” means the weights and measures officer appointed
under section 14(2) and includes the Commissioner;
“International Bureau” means the International Bureau
of Weights and Measures established by the Metric
Convention;
“International System of Units” “SI” means the system of
units referred to in section 3 of this Act;
“human food” includes every article used for food or drink
by man;
“just” means any weight, measure, measuring instrument or
measuring system which does not have an error greater
than the prescribed limits of error;
“measuring instrument” means any device intended to be
used to make measurement, alone or in conjunction
with one or more supplementary device and includes a
measuring system;
“measuring system” means one or more measuring
instruments used independently or in conjunction with
other devices not subject to legal metrology control;
“metric carat weight” has the meaning assigned to it in Part
V of the Seventh Schedule;
“metric system” means the base, supplementary, derived and
special or permitted units of the International System of
Units;
“Minister” means the Minister responsible for trade;
“National Standards” means the National Reference
Standards of weight and measure maintained by the
Tanzania Bureau of Standards under section 4 of the
Standards Act;Cap.

means the National Reference
Standards of weight and measure maintained by the
Tanzania Bureau of Standards under section 4 of the
Standards Act;Cap.

130

130

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THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E.

a. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.78
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E.

2023]
“net weight” means the weight of any good excluding the
weight of its container;
“premises” includes any place whether open or enclosed,
and any stall, vehicle, marine vessel, wagon or aircraft;
“pre-packed” means made up in advance ready for or kept
for or stored for sale in or on a container;
“prescribed” means prescribed by regulations made under
this Act;
“purchaser” includes any person acting on behalf of the
purchaser;
“quantity” includes any measurement of mass, length, time,
number, electric current, thermodynamic temperature,
amount of substance and luminous intensity;
“Secondary Standards” means the standards referred to in
section 5 of this Act;
“sell” includes offer, advertise, expose, keep, have in
possession, or prepare for sale and to exchange or dispose
of for valuable consideration, and cognate expressions
shall be construed accordingly;
“ship” includes any boat or any other description of vessel
used on navigation;
“stamping” includes putting a sticker and sealing, casting,
engraving, etching, branding or otherwise marking in
such manner as to be, so far as practicable, indelible, and
the expression “stamp” and other expressions relating to
it shall be construed accordingly;
“Tanzania Bureau of Standards” means the Tanzania Bureau
of Standards established under section 3 of the Standards
Act;
“trade” includes-
(a) the making, effecting or concluding of any contract
bargain, sale, purchase or transaction, or any payment
in connection therewith;
(b) any services rendered in which a measuring instrument
is used; or
(c) any other measurement within which a measuring
instrument or measuring system is used:
Cap.

s rendered in which a measuring instrument
is used; or
(c) any other measurement within which a measuring
instrument or measuring system is used:
Cap.

130

130

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THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
Provided that, paragraphs (b) and (c) shall apply to a
measuring instrument which is subject to legal metrology;
“testing” means comparison with appropriate standards
to determine metrological characteristics of measuring
instruments or measuring systems or pre-packed goods
according to a given procedure;
“valid” in relation to stamp borne by any weight, measure,
measuring instrument or measuring system, means a
stamp that is still in force according to any period which
may be prescribed and cognate expressions shall be
construed accordingly;
“verification” means examination, testing, rejecting or
condemning or passing as fit for trade use and stamping
any measuring instrument or measuring system;
“weight” means mass; and
“working standards” means standards which, standardised
by comparison with Secondary Standards, are kept for
the purpose of verifying trades, measuring instrument or
measuring systems, weight or measure.

ed
by comparison with Secondary Standards, are kept for
the purpose of verifying trades, measuring instrument or
measuring systems, weight or measure.

(2) The Minister may, by order published in the Gazette,
exempt any person, trade or industry from all or any of the
application of this Act. PART II
STANDARDS
3.–(1) Without prejudice to the powers of the Tanzania Bureau
of Standards to set standards, the International System of
Units (SI) shall be a system of measurement by reference to
which any measurement in trade shall be made in the United
Republic. (2) The International System of Units shall consist of–
(a) the base units set out and defined in the First Schedule;
(b) the supplementary units set out and defined in the
Second Schedule;
(c) units derived from the base and supplementary units,
defined in the Third Schedule;
Units of
measurement
GN. No. 38 of 1983

n the
Second Schedule;
(c) units derived from the base and supplementary units,
defined in the Third Schedule;
Units of
measurement
GN. No. 38 of 1983

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.80
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
(d) any special and permitted units that may be used in
conjunction with units mentioned in paragraph (a) to
(c) as adopted by the General Conference and referred
to in the Fourth Schedule. (3) The SI prefixes for multiples and sub-multiples of the
units referred to in subsection (2) are those set out and defined
in the Fifth Schedule and include such prefixes for multiples
and submultiples and defined by the General Conferences. (4) The units to be used in specialised scientific fields as are
set out and defined in the Sixth Schedule. (5) The Seventh Schedule shall have the effect for the
purposes of defining the units of measurement set out in the
Schedule, and for the purpose of any measurement of weight,
that weight may be expressed, by reference to the units of
measurement set out in Part V of the Seventh Schedule in the
same terms as its mass.

eight,
that weight may be expressed, by reference to the units of
measurement set out in Part V of the Seventh Schedule in the
same terms as its mass.

(6) The Eighth Schedule shall have effect for the purpose of
defining the physical weights and measures that shall be used
for the purpose of trade in the United Republic. 4.–(1) The prototype copies of the International Standards of
the kilogram and metre together with any prescribed standards
representing SI base units as defined in the First Schedule
hereto procured and maintained by the Tanzania Bureau of
Standards shall for the purpose of this Act be the National
Standards. (2) Without prejudice to the provisions of the Standards
Act, the Tanzania Bureau of Standards shall for purposes of
this Act be the procurer of the National Standards. 5.–(1) The Commissioner shall-
(a) procure and cause to be maintained copies of National
Standards and the weights and measures specified in
the Eighth Schedule;
(b) provide for the initial verification of any copies so
procured; and
National
Standards
Cap. 130
Procurement
of Secondary
Standards
Act No
12 of 2023 s. 80

ide for the initial verification of any copies so
procured; and
National
Standards
Cap. 130
Procurement
of Secondary
Standards
Act No
12 of 2023 s. 80

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THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
(c) cause the verified copies to be authenticated as
Secondary Standards in the manner he may prescribe. (2) A Secondary Standard of linear or capacity measure
may, as the Commissioner may think fit, be-
(a) provided either as a separate standard or by means of
divisions on a larger standard measure; and
(b) either marked in whole or in part with subdivisions
representing any smaller units of measurement of
multiples or submultiples of unit or have no such
markings. 6. The Commissioner shall be responsible for the proper care,
maintenance and custody of the Secondary Standards. 7. Once in every two years, the Commissioner shall cause each
of the Secondary Standards to be Compared with the national
standards. 8. The Commissioner may cancel on any Secondary Standard
and direct that it may no longer be used. as a secondary
standard
9.

the national
standards. 8. The Commissioner may cancel on any Secondary Standard
and direct that it may no longer be used. as a secondary
standard
9.

The Commissioner shall procure and cause to be maintained
standard equipment which he may determine as being proper
and necessary for the verification of standards of weights and
measures. 10.–(1) An inspector shall be provided with proper and
sufficient working standards of weights and measures which
shall be used for verification or re-verification of weights or
measures or instruments in use for purposes of trade. (2) At least once in every twelve months an inspector shall
compare the working standards, which have been in use
during the past twelve months, with the Secondary Standards,
Custody of
Secondary
Standards
Act No. 12 of 2023 s.81
Periodic
verification
of Secondary
Standards
Acts Nos. 8 of 1983 Sch. 12 of 2019 s. 45
12 of 2023 s. 82
Cancellation
of Secondary
Standards
Act No
12 of 2023 s. 83
Standards
equipment
Act No
12 of 2023 s.84
Working
standards
Acts Nos. 8 of 1983 Sch. 13 of 2016 s. 42
12 of 2019 s. 46
12 of 2023 s. 85

of 2023 s. 83
Standards
equipment
Act No
12 of 2023 s.84
Working
standards
Acts Nos. 8 of 1983 Sch. 13 of 2016 s. 42
12 of 2019 s. 46
12 of 2023 s. 85

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THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
and, if necessary, be corrected and adjusted before signing
a certificate prescribed in Form B of the Ninth Schedule to
this Act. (3) The Commissioner may, at any time cancel any working
standard and direct that it no longer be used. (4) Judicial notice shall be taken of every working standard
and each such standard shall be deemed to be true and accurate
until the contrary is proved.

Judicial notice shall be taken of every working standard
and each such standard shall be deemed to be true and accurate
until the contrary is proved.

PART III
USE OF WEIGHTS AND MEASURES IN TRADE
11.–(1) Unless otherwise permitted by this Act, every contract,
bargain, sale or dealing made or had after the commencement
of this Act whereby any work, goods, wares, merchandise or
other thing is or are to be, or is or are done, sold, delivered,
carried, measured, computed, paid for or agreed for by weight
or measure shall be made and had according to one of the
relevant units of measurement specified in the First, Second,
Third, Fourth, Fifth, Sixth, Seventh and Eighth Schedules to
this Act or to some multiple thereof, and if not so made or had,
shall, so far as it is to be performed in the United Republic,
be void:
Provided that, a court may, in exceptional circumstances in
the interest of justice, direct that a person who has received
an advantage under such contract, bargain, sale or dealing so
declared to be void restore it or make compensation for it to
the person from whom it was received.

e under such contract, bargain, sale or dealing so
declared to be void restore it or make compensation for it to
the person from whom it was received.

(2) All tolls and duties charged and collected according to
weight or measure shall be charged and collected according
to one of the relevant units of measurement specified in the
First, Second, Third, Fourth, Fifth, Sixth, Seventh and Eighth
Schedules or to some multiple of the units. (3) Contract, bargain, sale, dealing and collecting of duties
mentioned in this section are in this Act referred to under the
term “trade”. Weights and
measures
permitted to be
used in trade
Act No. 12 of 2019 s. 47
GN. No. 38 of 1983

ion are in this Act referred to under the
term “trade”. Weights and
measures
permitted to be
used in trade
Act No. 12 of 2019 s. 47
GN. No. 38 of 1983

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THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
12.–(1) Subject to subsection (2), person shall not use the
carat unit for purposes of trade except in transaction relating
to precious stones or pearls. (2) The restrictions set out in this section do not apply to any
transaction affecting the export of goods to a country where a
system of units of measurement other than those authorised
by this Act is used for purposes of trade. PART IV
DISTINCTIVE MARKS
13.–(1) A person shall not, at any time after the end of twelve
months from the commencement of this Act, use or have in his
possession for use in trade-
(a) any weight which, except where the small size of the
weight, renders it impracticable, does not have its
denomination stamped on the top or side thereof in
legible figures and letters; or
(b) any measure or length or capacity which does not have
its denomination stamped on the outside thereof in
legible figures and letters.

letters; or
(b) any measure or length or capacity which does not have
its denomination stamped on the outside thereof in
legible figures and letters.

(2) Any weight or measure mentioned in subsection (1) of
this section shall be stamped by an inspector with a prescribed
verification mark. (3) A person who contravenes the provisions of subsection
(1) commits an offence. (4) Subsection (1) shall not apply to any weight or measure
where the user of such weight or measure has applied and
obtained an exemption from the Minister. Sale by metric
carat weight
Stamping of
weights and
measures with
denomination
Act No. 13 of 2016

applied and
obtained an exemption from the Minister. Sale by metric
carat weight
Stamping of
weights and
measures with
denomination
Act No. 13 of 2016

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THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
PART V
ADMINISTRATIVE PROVISIONS
14.–(1) The President shall appoint a public officer to be
Commissioner for Weights and Measures. (2) The Commissioner shall appoint inspectors of weights
and measures as may be required in carrying out the purpose
of this Act. (3) The Commissioner may, for the purpose of carrying out
verification under this Act, appoint private inspectors
(4) The Commissioner shall, by notice in the Gazette,
publish the names of inspectors and private inspectors
appointed under this section. 15. The Commissioner shall be the chief executive officer of
weights and measures and shall-
(a) have the general supervision and control of the work of
inspector; and
(b) be responsible for the verification or re-verification
of all weights, measures, measuring instruments or
measuring systems used or intended to be used for
trade in the United Republic.

or re-verification
of all weights, measures, measuring instruments or
measuring systems used or intended to be used for
trade in the United Republic.

16.–(1)The duties of an inspector shall be-
(a) to carry out verification or inspection of measuring
instruments and goods;
(b) to care for and maintain any working standards which
may be entrusted to his care;
(c) to keep records and make such reports as the
Commissioner may require;
(d) to give effect to the directions of the Commissioner; and
(e) generally to exercise such other powers and duties as
may be conferred or imposed by this or any other Act
or by regulations made under this Act. (2) An inspector shall, in exercising his duties under
subsection (1), comply with the provisions of this Act,
Appointment of
Commissioner,
Assistant
Commissioners
and inspectors
Act No
12 of 2023 s.86
Function of
Commissioner
Act No. 13 of 2016
Duties of
inspectors
Acts Nos. 13 of 2016
12 of 2023 s.87

missioners
and inspectors
Act No
12 of 2023 s.86
Function of
Commissioner
Act No. 13 of 2016
Duties of
inspectors
Acts Nos. 13 of 2016
12 of 2023 s.87

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THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
regulations made under this Act and recognised regional and
international instruments for legal metrology. PART VI
INSPECTION OF WEIGHTS AND MEASURES
17.–(1) The Minister may, by order published in the Gazette,
appoint a Weights and Measures Committee, consisting of not
less than five and not more than seven persons. (2) Such Committee shall be convened as often as may be
necessary and the Minister, or some other person deputed by
him, shall be the Chairman of the Committee. (3) The duties of the Committee shall be to advise the
Minister upon any matter arising out of the operation of the
Act, which the Minister may refer to the Committee for advice. 18.–(1) The Commissioner shall provide and maintain
adequate facilities for testing prototype weights, measures,
measuring instrument or measuring systems for trade use.

ioner shall provide and maintain
adequate facilities for testing prototype weights, measures,
measuring instrument or measuring systems for trade use.

(2) A weight, measure, measuring instrument or measuring
system shall not be verified, stamped or authorised for trade
use unless it is of a-
(a) pattern approved by the Commissioner; or
(b) class or kind exempted by regulation from the
provisions of this Act
(3) A person who fails to comply with the provisions of this
section, commits an offence. 19.–(1) An inspector shall, within his area of jurisdiction,
for the purpose of verifying measuring or measuring system,
require a person to produce at such time and place as he
may specify any weight, measure, weighing or measuring
instrument or measuring system in his possession which is
used or intended to be used in trade. (2) Notwithstanding subsection (1), a person who possesses
any weight, measure, measuring instrument or measuring
Appointment
of Weights
and Measures
Committee
GN. No. 38 of 1983
Testing facilities
and approval of
patterns
Acts Nos. 13 of 2016 s. 42
12 of 2023 s. 78
Verification of
weights and
measures
Acts Nos. 13 of 2016 s. 44
12 of 2019 s. 49
12 of 2023 s.89
GN. No. 38 of 1983

13 of 2016 s. 42
12 of 2023 s. 78
Verification of
weights and
measures
Acts Nos. 13 of 2016 s. 44
12 of 2019 s. 49
12 of 2023 s.89
GN. No. 38 of 1983

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THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
system which is used or intended to be used in trade, shall
produce such weight, measure, measuring instrument or
measuring system to an inspector for verification. (3) Every such weight, measure, measuring instrument
or measuring system shall be examined and verified by the
inspector in a manner prescribed in regulations. (4) An inspector shall attend with his working standards
at such times and places fixed and, on the prescribed fee
being paid, shall examine and verify every weight, measure,
measuring instrument or measuring system brought to him
for the purpose, except that an inspector may also verify a
weight, measure, measuring instrument or measuring system
at any other time or place within his area of jurisdiction, or as
may be authorised by the Commissioner. (5) An immovable weight, measure, measuring instrument
or measuring system, shall be examined and verified in situ in
addition to any preliminary test.

5) An immovable weight, measure, measuring instrument
or measuring system, shall be examined and verified in situ in
addition to any preliminary test.

(6) Where a weight, measure, measuring instrument or
measuring system is of delicate construction and cannot
conveniently be moved it shall be sufficient for the purposes of
this section if the person who has the same in his possession for
use or intended use in trade notifies the inspector in writing of
its nature and position instead of producing it to the inspector. (7) When a measure of capacity made of glass, earthenware
or enameled metal has been stamped it shall not be necessary to
produce such measure, unless the original stamp is defaced or
has become illegible or the measure has been chipped or cracked. (8) A person who contravenes or fails to comply with the
provisions of this section, commits an offence. 20. A weight or measure which is in accordance with the
standard weight or measure which it represents or which has no
greater error than the prescribed limit of error shall be deemed
to be just and true unless it be shown to the satisfaction of
the court that such weight, measure, measuring instrument or
measuring system has been tempered with in such a way as to
facilitate the commission of fraud. Just weight and
measure
Act No. 8 of 1983 Sch.

ment or
measuring system has been tempered with in such a way as to
facilitate the commission of fraud. Just weight and
measure
Act No. 8 of 1983 Sch.

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THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
21.–(1) Subject to the provisions of this Act, every weight,
measure, measuring instrument or measuring system used or
intended to be used in trade and found to be just shall, if not
already stamped, be stamped with the prescribed verification
mark in such manner so as to prevent fraud, except that an
inspector may refuse to stamp a weight cased with iron unless
it is fitted with a plug of softer metal suitable for stamping. (2) Where any dormant measuring instrument which is
required to be stamped only after it has been installed at the
place where it is to be used for trade, if, after the measuring
instrument has been so stamped, is in any way removed or
dismantled and re-installed whether in the same or some other
place it shall not be used for trade after being so re-installed
until it has been re-tested and re-stamped by an inspector.

in the same or some other
place it shall not be used for trade after being so re-installed
until it has been re-tested and re-stamped by an inspector.

22.–(1) An inspector may, at any time, request any person
having in his possession or control any weight, measure,
measuring instrument or measuring system which is used
or intended to be used for trade to submit it to him at such
time and place as the inspector may specify for the purpose of
examination and testing or re-testing of that instrument. (2) A person who fails to comply with the request of an
inspector under this section commits an offence. 23. An inspector who on examination or testing finds a weight,
measure, measuring instrument or measuring system to be
false, unjust or not in compliance with the provisions of this
Act or any regulations made under this Act shall-
(a) reject it;
(b) mark it with the prescribed rejection mark;
(c) issue to the person in charge of such measuring
instrument or measuring system a rejection note in the
prescribed form to the effect that it has been rejected:
Provided that, the inspector may in his discretion-
(a) adjust it;
(b) condemn it,
Stamping of
verification mark,
etc. Acts Nos. 13 of 2016 s. 42
12 of 2023 s. 90
GN. No. 38 of 1983
Request by
inspector to
examine test or
retest weight,
measure, etc. Act No. 13 of 2016 s.

s Nos. 13 of 2016 s. 42
12 of 2023 s. 90
GN. No. 38 of 1983
Request by
inspector to
examine test or
retest weight,
measure, etc. Act No. 13 of 2016 s.

42
Rejection of
weight, measure,
etc. Acts Nos. 13 of 2016 s. 42
12 of 2019 s. 50
12 of 2023 s. 91

42
Rejection of
weight, measure,
etc. Acts Nos. 13 of 2016 s. 42
12 of 2019 s. 50
12 of 2023 s. 91

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.88
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
(c) return it to the person in charge of such measuring
instrument or measuring system for adjustment; or
(d) retain it with a view to proceedings being taken for its
forfeiture. 24. An inspector shall not stamp with the prescribed verification
mark any weight, measure or measuring instrument-
(a) which is not just;
(b) which does not comply with the provisions of this Act or
any regulations made under this Act except in so far as
any discretion may be vested in the inspector or in any
other person by the Act or regulations to waive such
compliance;
(c) which is not of the denomination of a weight or measure
specified in the Eighth Schedule to this Act;
(d) without testing by comparison with the appropriate
working standard. 25.

tion of a weight or measure
specified in the Eighth Schedule to this Act;
(d) without testing by comparison with the appropriate
working standard. 25.

An inspector shall not, while he holds office, be employed
in or derive any profit from the making, buying, selling or
adjusting of weights, measures, measuring instrument or
measuring system, except that an inspector may while carrying
out the duties of his office, adjust weights, measures, measuring
instrument or measuring system and for any such adjustment
charge the prescribed fee for his services. PART VII
SALE OF GOODS BY WEIGHTS AND MEASURES
26.–(1) a person shall not sell or offer, import, pack, deliver,
expose or possess, keep on trade premises, carry or, in
any manner, advertise for sale any of the goods otherwise
than in accordance with the weight or measure and in the
denomination specified under this Act. (2) A person who owns or hired to carry or transport by
any means pre-packed goods shall comply with manner of
packaging specified under this Act. Illegal stamping
Acts Nos. 13 of 2016 s. 42
12 of 2023 s. 92
Restriction on
inspector buying,
selling
or adjusting
weights,
measures, etc. Act No. 13 of 2016 s. 42
Sale by net weight
or measure only,
etc. Acts Nos. 13 of 2016 s. 45
12 of 2019 s. 51
12 of 2023 s. 93
GN. No. 38 of 1983

etc. Act No. 13 of 2016 s. 42
Sale by net weight
or measure only,
etc. Acts Nos. 13 of 2016 s. 45
12 of 2019 s. 51
12 of 2023 s. 93
GN. No. 38 of 1983

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.89
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
(3) A person who contravenes or fails to comply with
subsections (1) and (2) commits an offence and in addition to
any penalty the court may impose, such goods may be liable to
be forfeited. 27. Section 26 shall not apply to-
(a) the sale of human food for consumption on or at the
premises of the seller; or
(b) the sale of any goods in quantities not exceeding 50
grams or 50 millilitres, or at a price not exceeding five
shillings:
Provided that, the Minister may by order, vary the quantity
of goods to be sold and the price specified in paragraph (b) of
this section. 28.

illings:
Provided that, the Minister may by order, vary the quantity
of goods to be sold and the price specified in paragraph (b) of
this section. 28.

Where any person has in his possession for sale or delivery
any goods of a kind required by the provisions of this Act to
be sold by weight or measure, or any goods in respect of which
any representation of weight or measure is made, he shall-
(a) cause such goods to be weighed or measured in the
presence of the inspector or permit the inspector to
weigh or measure them;
(b) where necessary for this purpose, break open or permit
the inspector to break open any wrapper or container
in which such goods are packed; and
(c) where so requested by the inspector sell such goods to
the inspector. 29.–(1) In any proceedings under this Act, the description of
any goods in any complaint, charge or information shall be
prima facie evidence that the goods were, at the time of the
offence and subsequently, as so described, and the burden of
proving the contrary shall lie upon the accused. (2) Where any goods are found on any trade premises, such
goods shall be presumed to be for sale or to be carried for
sale and the burden of proving the contrary shall lie upon the
accused. Exceptions
GN. No. 38 of 1983
Inspector may
weigh or measure
pre-packed goods
Act No. 13 of 2016 s.

f proving the contrary shall lie upon the
accused. Exceptions
GN. No. 38 of 1983
Inspector may
weigh or measure
pre-packed goods
Act No. 13 of 2016 s.

42
Presumption of
nature of goods
G.N. No. 38 of 1983

42
Presumption of
nature of goods
G.N. No. 38 of 1983

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.90
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
30.–(1) A person using any measuring instrument or
measuring system for the purpose of retail sale of any goods to
a purchaser shall-
(a) cause the measuring instrument or measuring system
used for that purpose to be so placed; and
(b) conduct the operation of weighing or measuring as to
permit the purchaser a clear and unobstructed view of
such measuring instrument or measuring system and
all the indications of weight or measure pertaining to
such operation. (2) A person who contravenes or fails to comply with
the provisions of this section commits an offence and on
conviction, shall be liable to a fine not less than three hundred
thousand shillings and not exceeding fifty million shillings.

mits an offence and on
conviction, shall be liable to a fine not less than three hundred
thousand shillings and not exceeding fifty million shillings.

31.–(1) In any proceedings under this Act in respect of
an alleged deficiency of weight or measure of any goods
mentioned in this Act or any order made under this Act, it shall
be a defence for the person charged to prove to the satisfaction
of the court that-
(a) the commission of the offence was due to a mistake or
to an accident or some other cause beyond his control;
and
(b) all reasonable steps were taken by him to prevent the
occurrence of such deficiency of those goods by himself
or any person under his control:
Provided that, it shall not be a defence under this subsection
for the person charged to prove that the commission of the
offence was due to some cause beyond his control if that cause
could reasonably have been foreseen. (2) In any proceedings under this Act or order made under
this Act, in respect of an alleged deficiency of weight or measure
of any goods, the court shall disregard any inconsiderable
variation in the weight or measure of a single article, and shall
have regard to the average weight or measure of other articles
of the same kind, if any, sold or delivered by the accused or in
Weighing, etc. operations to be
in presence of
purchaser
Act No.

re of other articles
of the same kind, if any, sold or delivered by the accused or in
Weighing, etc. operations to be
in presence of
purchaser
Act No.

13 of 2016 s.. 42
and 46
Safeguards to
traders

13 of 2016 s.. 42
and 46
Safeguards to
traders

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.91
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
his possession for the purpose of sale or delivery on the same
occasion and generally to all the circumstances of the case. (3) In any proceedings under this Act, the weight or
measure of any article shall be deemed to be correct if it is
within the permitted limits of error prescribed for such article
by regulations made under this Act. PART VIII
OFFENCES AND PENALTIES
32. A person who falsely represents, either directly or indirectly,
that a pattern of weight, measure, measuring instrument or
measuring system is a pattern approved to be suitable for trade
use, commits an offence. 33. A person who is not an inspector and acts as or purports to
be a inspector, commits an offence.

to be suitable for trade
use, commits an offence. 33. A person who is not an inspector and acts as or purports to
be a inspector, commits an offence.

34.–(1) A person who, in the case of any measuring instrument
or measuring system used or intended to be used for trade-
(a) not being an inspector or a person acting under the
instructions of an inspector, marks in any manner any
plug or seal used or designed for use for the reception
or a stamp;
(b) forges, counterfeits or, except as permitted by or under
this Act, in any way alters or defaces any stamp;
(c) removes any stamp and inserts it into any other
instrument; or
(d) makes any alteration in the instrument after it has been
stamped such as to make it false or unjust,
commits an offence:
Provided that, paragraphs (a) and (b) of this subsection shall
not apply to the destruction or obliteration of any stamp, plug
or seal in the course of the adjustment or repair of measuring
instrument or measuring system by a licensed repairer. Falsely
representing
pattern to be
approved pattern
Acts Nos. 13 of 2016 s. 42
12 of 2023 s.78
Offence in
connection with
inspectors
Act No. 13 of 2019 s. 52
Forgery of stamps
on measuring
instrument or
measuring system
Act No. 13 of 2016 s. 42

Offence in
connection with
inspectors
Act No. 13 of 2019 s. 52
Forgery of stamps
on measuring
instrument or
measuring system
Act No. 13 of 2016 s. 42

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.92
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
(2) A person who uses for trade, sells or exposes or offers
for sale any measuring instrument or measuring system which
to his knowledge-
(a) bears a stamp which is a forgery or counterfeit, or
which has been transferred from another instrument,
or which has been altered or defaced, otherwise than as
permitted under this Act; or
(b) is false or unjust as a result of an alteration made in the
instrument after it has been stamped,
commits an offence. (3) A measuring instrument or measuring system in respect
of which an offence under this section is committed, and any
stamp or stamping implement used in connection with the
offence, shall be liable to be forfeited.

an offence under this section is committed, and any
stamp or stamping implement used in connection with the
offence, shall be liable to be forfeited.

35.–(1) A person who uses or has in his possession for use in
trade any weight, measure, measuring instrument or measuring
system the use of which for such trade is not authorised by this
Act or is in contravention of the provisions of this Act or any
regulations made under this Act, or which is false or unjust, or
which is not stamped with the prescribed verification mark,
commits an offence.

r any
regulations made under this Act, or which is false or unjust, or
which is not stamped with the prescribed verification mark,
commits an offence.

(2) Notwithstanding the provisions of subsection (1), the
Commissioner may, where he is satisfied that in any area of
the United Republic insufficient staff or facilities exist for
the testing of weights, measures, measuring instrument or
measuring system in accordance with the provisions of this
Act, in writing in such form as may be prescribed and on
such term, and subject to such conditions as he may think
fit, authorise any person in such area to use or have in his
possession for use in trade any weight, measure, measuring
instrument or measuring system which is not stamped with
the prescribed verification mark for a period not exceeding six
months or until such weight, measure, measuring instrument
or measuring system is verified in accordance with the
provision of this Act, whichever is the less. Use of
unauthorised
weights or
measures in trade
Act No. 13 of 2016 s. 42

erified in accordance with the
provision of this Act, whichever is the less. Use of
unauthorised
weights or
measures in trade
Act No. 13 of 2016 s. 42

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.93
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
36. A person who uses or has in his possession for use in
trade, or hires out, permits or condones the use for trade of
any weight, measure, measuring instrument or measuring
system which is false or unjust, commits an offence, and the
instrument shall be liable to be forfeited. 37. A person who willfully or knowingly makes or sells or
causes to be made or sold, any false or unjust weight, measure,
measuring instrument or measuring system, commits an
offence.

wingly makes or sells or
causes to be made or sold, any false or unjust weight, measure,
measuring instrument or measuring system, commits an
offence.

38.–(1) A person who uses, exposes or has in his possession for
sale any weight, measure, measuring instrument or measuring
system which does not bear a valid verification stamp of a date
not earlier than one year previous to such use, sale or exposure
or possession for sale, commits an offence:
Provided that, this subsection shall not apply to measuring
instrument or measuring system which when made, were not
intended or designed for trade use and which were permanently
and clearly marked on a conspicuous part thereon with the
words “NOT FOR TRADE USE”. (2) A weight, measure, measuring instrument or measuring
system made or sold in contravention of the provisions of this
section shall be liable to be forfeited. 39. Where fraud is knowingly committed in the use of a
weight, measure, measuring instrument or measuring system,
the person committing the fraud and every person who is a
part to the fraud commits an offence and in addition to any
penalty the court imposes, the weight, measure, measuring
instrument or measuring system shall be liable to be forfeited. 40.

e and in addition to any
penalty the court imposes, the weight, measure, measuring
instrument or measuring system shall be liable to be forfeited. 40.

A person who-
(a) assaults, resists, hinders or obstructs an inspector
entering any place mentioned in section 48;
(b) hinders or obstructs an inspector in the performance
of his duties under this Act;
Use of false or
unjust instrument
Act No. 13 of 2016 s. 42
Making or selling
unjust weights,
measures etc. Act No. 13 of 2016 s. 42
Sale of
unstamped
instrument
Acts Nos. 13 of 2016 s. 42
12 of 2023 s.78
GN. No. 38 of 1983
Fraud in use of
weight, measure,
etc. Acts Nos. 13 of 2016 s. 42
12 of 2023 s. 94
Obstructing
inspectors, etc., in
performance of
their duties
Act No. 13 of 2016 s. 42
GN. No. 38 of 1983

. Acts Nos. 13 of 2016 s. 42
12 of 2023 s. 94
Obstructing
inspectors, etc., in
performance of
their duties
Act No. 13 of 2016 s. 42
GN. No. 38 of 1983

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.94
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
(c) fails to comply with any request made by an inspector
in the performance of his duties under this Act;
(d) bribes or attempts to bribe an inspector in connection
with any matter arising from the exercise or performance
of his duties under this Act;
(e) being an inspector, accepts or attempts to solicit any
bribe in connection with any matter arising in the
performance of his duties under this Act; or
(f) uses indecent, abusive or insulting language to an
inspector in the exercise of his duties under this Act,
commits an offence. 41. A person who-
(a) in selling any article by weight, measure or number,
delivers or causes to be delivered to the purchaser a
lesser weight, measure or number, as the case may be,
than is purported to be sold; or
(b) in a trade dealing by means of words, writing or conduct,
makes any false representation as to the number, gauge,
weight, measure or quantity of any goods or things,
commits an offence.

s, writing or conduct,
makes any false representation as to the number, gauge,
weight, measure or quantity of any goods or things,
commits an offence.

42.–(1) A person who by means of words, description or other
indication, direct or indirect, makes any false declaration or
statement or misleads any person as to the true measure of any
article sold by him, commits an offence. (2) Where an article is purchased by weight or measure and
the weight or measure is determined by the purchaser at or
before the time of sale, and the purchaser by means of words,
description or other indication, direct or indirect, makes to the
seller or his agent a false declaration or statement or misleads
the seller or his agent to the true weight or measure of the
article, the purchaser commits an offence. Prohibition of
giving short
weight, measure
or number
False declaration
as to measure
Act No. 12 of 2023 s. 95

icle, the purchaser commits an offence. Prohibition of
giving short
weight, measure
or number
False declaration
as to measure
Act No. 12 of 2023 s. 95

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.95
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
43. A person who sells or exposes for sale by any denomination
of weight or measure denominations other than the
denominations of weight or measure authorised by section 3,
commits an offence. 44. A person who-
(a) attempts to commit an offence; or
(b) aids or abets the commission of an offence,
under this Act, commits an offence. 45.–(1) A person who contravenes the provisions of this Act or
regulations made under this Act and which no specific penalty
is provided commits an offence and on conviction-
(a) in the case of first offence, to a fine of not less than
three hundred thousand shillings and not exceeding
fifty million shillings or to imprisonment for a term not
exceeding two years or to both; and
(b) in the case of a second or subsequent offence, to a
fine of not less than five hundred thousand shillings
and not exceeding one hundred million shillings or to
imprisonment for a term not exceeding five years or to
both.

han five hundred thousand shillings
and not exceeding one hundred million shillings or to
imprisonment for a term not exceeding five years or to
both.

(2) On the conviction of any person for an offence under
this Act, the court may, in addition to any other penalty which
may be imposed, order the confiscation of all or any part of
goods in respect of which the offence was committed, and all
goods or instruments so confiscated shall be disposed of in a
manner which the court directs. 46.–(1) Where the Commissioner is satisfied that any person
has committed an offence under this Act, he may by order,
compound such offence by requiring such person to make
payment of a sum of money, except that-
(a) such sum of money shall not be less than one hundred
thousand shillings and not exceeding twenty million
shillings;
Sales by
unauthorised
denominations
Attempt, aid or
abet
General penalty
Acts Nos. 8 of 1983 Sch. 13 of 2016 s. 47
Power to
compound
offences
Act No. 13 of 2016 s. 48
GN. No. 38 of 1983

Attempt, aid or
abet
General penalty
Acts Nos. 8 of 1983 Sch. 13 of 2016 s. 47
Power to
compound
offences
Act No. 13 of 2016 s. 48
GN. No. 38 of 1983

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.96
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
(b) the power conferred under this section shall be
exercised when a person admits that he has committed
an offence under this Act;
(c) the Commissioner shall give to the person from whom
he receives such sum of money, a receipt;
(d) any sum of money received under this section shall be
dealt with as if the sum of money were a fine imposed
by the court of law for the offence;
(e) the order shall not be made under this section unless
the person concerned had an opportunity of showing
cause against the making of the order. (2) In addition to the fine, the Commissioner may ask the
court to forfeit any weight or measure or measuring instrument
or measuring system or other item for which the offence was
committed as directed by or under this Act or any regulations
made under this Act.

trument
or measuring system or other item for which the offence was
committed as directed by or under this Act or any regulations
made under this Act.

(3) Subject to the provision of subsection (1), where
proceedings are brought against a person for an offence under
this Act, it shall be a good defence if that person proves that the
offence with which he is charged has been earlier compounded. (4) The Commissioner may, by order published in the
Gazette, delegate to the Assistant Commissioners or inspectors
as the case may be, his powers under subsection (1) of this
section to compound offences and upon such delegation the
provisions of this section shall apply mutatis mutandis to the
performance by the Assistant Commissioners or inspector of
such functions so delegated to them. (5) Where any person is aggrieved by any order made
under subsection (1), he may, within thirty days of such order
being made, appeal against such order to a higher court and
the provisions of Part X of the Criminal Procedure Act shall
apply with the necessary modifications, to every such appeal as
if it were an appeal against a sentence passed by a district court
in the exercise of its original jurisdiction. Cap. 20

ions, to every such appeal as
if it were an appeal against a sentence passed by a district court
in the exercise of its original jurisdiction. Cap. 20

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.97
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
PART IX
MISCELLANEOUS AND
SUPPLEMENTARY PROVISIONS
47. Where any weight, measure, measuring instrument or
measuring system is found-
(a) in the possession of a person carrying on trade; or
(b) on the premises used for trade, of any person-
(i) whether or not such premises are a building or in
the open air; or
(ii) whether or not such premises are open or enclosed,
that person shall be deemed for purposes of this Act until the
contrary is proved, to have such weight, measure, measuring
instrument or measuring system in his possession for use for
the purposes of trade.

il the
contrary is proved, to have such weight, measure, measuring
instrument or measuring system in his possession for use for
the purposes of trade.

48.–(1) An inspector may at all reasonable times-
(a) enter into premises he has reasonable cause to believe
there is any weight, measure, measuring instrument or
measuring system which is in use for trade and may
inspect such weight, measure, measuring instrument
or measuring system or part of such equipment which
he has reasonable cause to believe is used contrary to
the provisions of this Act;
(b) seize and detain any weight, measure, measuring
instrument or measuring system or part of such
equipment which he has reasonable cause to believe is
used contrary to the provisions of this Act;
(c) enter any premises in which he has reasonable cause
to believe any goods are being sold or kept for sale or
delivery and may inspect and weigh or measure any of
such goods;
(d) order any person delivering any goods to stop and may
inspect and weigh or measure such goods;
Evidence of
possession
Act No. 13 of 2016 s. 42
Powers of
inspector
Acts Nos. 13 of 2016 s. 42
12 of 2023 s. 96
GN. No.38
of 1983

measure such goods;
Evidence of
possession
Act No. 13 of 2016 s. 42
Powers of
inspector
Acts Nos. 13 of 2016 s. 42
12 of 2023 s. 96
GN. No.38
of 1983

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.98
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
(e) for purposes of paragraph (a) and (b), use any verified
or re-verified instrument, weight or measure available
at the premises where such goods are being inspected;
(f) seize and detain any goods which, after inspection,
found to be contrary to the provisions of this Act;
(g) seal the premises where he has reasonable grounds
to believe that any offence under this Act has been, is
being or is likely to be committed in such premises;
(h) order the seller or purchaser of any goods to produce
for inspection, and if he thinks necessary, seize and
detain any invoice, delivery note or other record kept
by such seller or purchaser; or
(i) order any person mentioned in paragraph (d) to-
(i) provide sufficient labour for handling and
weighing of any goods under this section;
(ii) give his name and address or his employers’ name
and address, if any. (2) A person who breaks a seal or fails to comply with any
order made in terms of this section, commits an offence.

ployers’ name
and address, if any. (2) A person who breaks a seal or fails to comply with any
order made in terms of this section, commits an offence.

(3) When exercising any powers conferred by this section,
an inspector shall produce a written authority from the
Commissioner. 49. A document purporting to be signed by an inspector and
certifying that a weight, measure, measuring instrument or
measuring system or goods specified therein was inspected
or verified by him on a specified date and the finding of his
verification or inspection shall be received in any court on
production by any person and without further proof as prima
facie evidence of the facts stated therein
50.–(1) Where the owner or possessor of the weight, measure,
measuring instrument, measuring system or goods cannot
appear in court and show cause within the prescribed time
after the seizure, such weight, measure, measuring instrument,
measuring systems or goods shall be forfeited. Judicial notice of
documents
Acts Nos. 13 of 2016 s. 42
12 of 2023 s. 97
Forfeiture
Acts Nos. 13 of 2016 s. 42
12 of 2023
S. 97

ds shall be forfeited. Judicial notice of
documents
Acts Nos. 13 of 2016 s. 42
12 of 2023 s. 97
Forfeiture
Acts Nos. 13 of 2016 s. 42
12 of 2023
S. 97

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.99
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
(2) All weights, measures, measuring instruments or
measuring systems or goods or other item forfeited under this
Act shall be disposed of as the court may direct. 51.–(1) Whenever any manager, agent or employee of any
person, herein referred to as principal, does or omits to do
an act which could be an offence under this Act for such
principal to do or omit to do, then, unless notice is given to
the Commissioner that all reasonable steps were taken by
the principal to prevent that act or omission of the kind in
question, the principal shall be presumed himself to have done
or omitted to do that act and be liable to be convicted and
sentenced in respect thereof. (2) Whenever any manager, agent or employee of a principal
does or omits to do any act which would be an offence under
this Act to do or omit to do, he shall be liable to be convicted
and sentenced in respect thereof as if he were the principal.

uld be an offence under
this Act to do or omit to do, he shall be liable to be convicted
and sentenced in respect thereof as if he were the principal.

52.–(1) In any proceedings under this Act in which it is
necessary in order to establish the charge against a person to
prove that a notice or any other means under section 19(1)
in respect of any measuring instrument or measuring system
has been complied with, such instrument shall be presumed,
unless the contrary is proved, at all relevant times, to have been
used in trade by that person in the area to which the notice in
question relates. (2) Where any goods are found on any premises which
are used by any person for trade, such goods shall, unless the
contrary intention is proved, be deemed, for the purpose of
this Act, to be in or on that place or vehicle for sale. 53. A proceedings or conviction under this Act shall not affect
any civil right or remedy under any other written law. Acts or omissions
by managers,
agents or
employees
GN. No. 38 of 1983
Burden of proof
Act No. 13 of 2016 s. 42
GN. No. 38 of 1983
Saving of civil
remedies

or omissions
by managers,
agents or
employees
GN. No. 38 of 1983
Burden of proof
Act No. 13 of 2016 s. 42
GN. No. 38 of 1983
Saving of civil
remedies

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.100
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
54. A person who prescribes measurements applicable in his
respective jurisdiction shall have regard to the prescribed
standards of measurements under this Act. [s.

ho prescribes measurements applicable in his
respective jurisdiction shall have regard to the prescribed
standards of measurements under this Act. [s.

53A]
55.–(1) The Minister may make regulations prescribing
all matters that by this Act are required or permitted to be
prescribed or are necessary or convenient to be prescribed for
carrying out or giving effect to this Act, including, in particular,
provisions of, or with respect to-
(a) the exemption in whole or part from the provisions
of this Act any undertaking or class of undertaking
specified in the Regulations;
(b) the procedure for examination or verification or
stamping of weights, measures, measuring instrument
or measuring system, including the prohibition of
stamping in cases when the nature, denomination,
materials or principle of construction of the weight,
measure, measuring instrument or measuring system
appears likely to facilitate the perpetration of fraud;
(c) the general specifications for instruments suitable for
trade use including prohibition of approved patterns
that are unsuitable for further use in trade;
(d) the manner of identification of any instrument by its
approved pattern;
(e) the manner of marking any instrument suitable for use
in trade;
(f) the test to be applied for the purpose of ascertaining
the accuracy and efficiency of weights, measures,
measuring instrument or measuring systems;
(g) the limits of error to be allowed on verification and
tolerated either generally or with respect to any trade
or goods;
(h) the fees that may be demanded by inspector during
verification of any weight, measure or measuring
instrument or inspection of pre-packed goods;
Compliance
with prescribed
measurement
standards
Acts Nos.

ification of any weight, measure or measuring
instrument or inspection of pre-packed goods;
Compliance
with prescribed
measurement
standards
Acts Nos.

8 of 1983 Sch. 13 of 2016 s. 49
Regulations
Acts Nos. 8 of 1983
13 of 2016 s. 42
12 of 2019 s. 53
12 of 2023 ss. 78
and 98
GN. No. 38 of 1983

8 of 1983 Sch. 13 of 2016 s. 49
Regulations
Acts Nos. 8 of 1983
13 of 2016 s. 42
12 of 2019 s. 53
12 of 2023 ss. 78
and 98
GN. No. 38 of 1983

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.101
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E.

. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.101
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E.

2023]
(i) the manner in which the value expressed in terms of
any weight or measure other than in terms of standard
weight or measure may be converted;
(j) the enabling of inspector to carry out their duties
under this Act; and prohibiting any person while so
employed by the Weights and Measures Agency from
deriving any personal profits from adjusting, buying,
selling, repairing, overhauling or installing any weight,
measure, measuring instrument or measuring system;
(k) the purpose for which particular types of measuring
instrument or measuring system may be used for
purpose of trade;
(l) the manner of erecting or using weights, measures,
measuring instrument or measuring system used for
purposes of trade;
(m) the circumstances in which, conditions under which
and manner in which the verification stamp or marks
placed on weights, measures, measuring instrument or
measuring system may be obliterated or defaced;
(n) the registration of public weigh-bridges and their
weighmen;
(o) the procedure to be followed before issuing a certificate
for pattern approval;
(p) the manner or quantities in which pre-packed goods,
foodstuffs may be packed or sold in the market or
shops;
(q) the system of relating and authorising persons
proposing to engage themselves in the manufacturing,
importation, repairing, overhauling and installation
of any weights, measures, measuring instrument or
measuring systems and the fee to be charged for such
registration, examination or authorisation;
(r) the manner under which weights or measures,
measuring instrument or measuring systems used in
industries may be verified;

nation or authorisation;
(r) the manner under which weights or measures,
measuring instrument or measuring systems used in
industries may be verified;

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.102
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E.

. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.102
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E.

2023]
(s) the specifications, forms and manner in which
verification stamps, rejection stamps, date stamps
and other forms of stamps may be made, used and
maintained by the inspector;
(t) the specifications of standard equipment necessary to
carry out the provisions of this Act, and the manner in
which standard equipment shall be used and verified
by the inspector;
(u) the exemption from the provisions of this Act to any
contract made or effected with a view to the exportation
of any goods from the United Republic;
(v) the period of the validity of verification stamps on
various types of measuring instrument or measuring
system;
(w) prescribing the manner in which indications of weights
or measures shall be marked on pre-packed goods
required by the provisions of this Act to be so marked;
(x) procedure and various forms to be used in carrying
out forfeiture and disposal of goods, measuring
instruments and measuring systems;
(y) prescribing the permitted limits of error in the weight
or measure of any goods specified in the Schedules;
(z) requiring all or any weights or measures to be
constructed with distinctive shape or appearance;
(aa) conferring upon inspector or upon a particular
inspector or inspectors, any of the powers and duties
which are by this Act conferred or imposed upon the
Commissioner;
(bb) prescribing anything that is by this Act authorised or
required to be prescribed generally for better carrying
into effect any of the purposes of this Act.

ribing anything that is by this Act authorised or
required to be prescribed generally for better carrying
into effect any of the purposes of this Act.

(2) Regulations made under this section may provide
penalties for the breach of such regulations not exceeding the
penalties contained in section 45 of this Act. [s. 54]

e under this section may provide
penalties for the breach of such regulations not exceeding the
penalties contained in section 45 of this Act. [s. 54]

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.103
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
56. The Minister may, by order published in the Gazette,
amend the Schedules to this Act. [s.

AG.103
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
56. The Minister may, by order published in the Gazette,
amend the Schedules to this Act. [s.

54A]
57.–(1) [Repeals the Weights and Measures Ordinance, the
Sale of Goods (Weights and Measures) Ordinance, the Weights
and Measures (Metric System) Act and the Metric System
(Amendment of Written Laws) Act.]
(2) Notwithstanding the provisions of subsection (1) of this
section-
(a) where, prior to the date upon which this Act comes into
operation, any weight or measure has been stamped
by an inspector with a verification mark under the
provisions of the Weights and Measures Ordinance
hereby repealed, such weight or measure as the case
may be, shall be stamped with a prescribed verification
mark for purposes of this Act;
(b) any standards procured or provided by the Minister under
the provisions of the Weights and Measures Ordinance
hereby repealed, being standards which the Minister is
authorised or required to procure or provide under the
provisions of this Act, shall be deemed to have been
procured and verified or provided and authenticated, as
the case may be, under the provisions of this Act;
(c) any subsidiary legislation made under any of
the enactments repealed by this Act and in force
immediately prior to the coming into operation of
this Act shall, so far as it is not inconsistent with the
provisions of this Act, continue in force as if made
under this Act; and
(d) any orders, directions, appointments and other acts
lawfully made or done under a provision of the
enactments repealed and in force immediately before
the commencement of this Act shall be deemed to have
been made or done under the corresponding provision
of this Act and shall continue to have effect accordingly.

ent of this Act shall be deemed to have
been made or done under the corresponding provision
of this Act and shall continue to have effect accordingly.

[s. 55]
Power to amend
Schedule
Act No. 13 of 2016 s. 50
Repeal and
savings
Ords. Nos. 16 of 1960
17 of 1960
Acts Nos. 46 of 1968
52 of 1969

[s. 55]
Power to amend
Schedule
Act No. 13 of 2016 s. 50
Repeal and
savings
Ords. Nos. 16 of 1960
17 of 1960
Acts Nos. 46 of 1968
52 of 1969

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.104
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
FIRST SCHEDULE
(Made under section 3(2)(a))
BASE UNITS OF SI
The base units of the SI are defined as follows-
Physical Quantity Name of
Unit
Unit
symbol Definition
1. Length metre m
the unit for the measurement of length equal
to 1 650 763.73 wavelengths in vacuum of
the radiation corresponding to the transition
between the levels 2p10 and 5d5 of the krypton -
86 atom. 2. Mass kilogram kg
the unit for the measurement of mass, being
a mass of the international prototype of the
kilogram established in the year 1889 by the
First General Conference and deposited at the
International Bureau. 3. Time second s
the unit for the measurement of time, being
duration of 9 192 631 770 periods of the
radiation corresponding to transition between
the two hyperfine levels of the ground state of
caesium - 133 atom. 4.

n of 9 192 631 770 periods of the
radiation corresponding to transition between
the two hyperfine levels of the ground state of
caesium - 133 atom. 4.

Electric current ampère A
the unit for the measurement of electric current,
being constant current, that, if maintained in two
straight parallel conductors of infinite length, of
negligible circular cross-section and placed one
metre apart in vacuum, would produce between
these conductors a force equal to 2x10-7 newton
per metre of length. 5. Thermo-dynamic kelvin K
the unit for the measurement of thermodynamic
temperature, being the fraction 1/273.16 of the
thermodynamic temperature of the triple point
of water. 6. Luminous intensity candela cd
is the unit of measurement of luminous
intensity, in a given direction of a source that
emits monochromatic radiation of frequency
540x102 Hz and of which radiant intensity in that
direction is 1/683 watt per steradian. 7. Amount of
substance mole mol
the unit for the measurement of amount of
substance of a system which contains as many
elementary entities as there are atoms in 0.012
kilogram of carbon 12. Note: When the mole is used, the elementary entities
must be specified and these may be atoms, molecules,
ions, electrons, other particles or specified groups of such
particles.

, the elementary entities
must be specified and these may be atoms, molecules,
ions, electrons, other particles or specified groups of such
particles.

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.105
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
SECOND SCHEDULE
(Made under section 3(2)(b))
SUPPLEMENTARY UNITS OF SI
The supplementary units of the SI are defined as follows-
Physical
Quantity
Name of
Unit
Unit
symbol Definition
Plane angle radian rad
the unit for the measurement of plane angle, being the angle
with its vertex at the centre of a circle and subtended by an
arc of the circle that is equal in length to its radius. solid angle steradian sr
the unit for the measurement of solid angle being the angle
with its vertex at the centre of a sphere and subtended by an
area on the spherical surface equal to that of a square with
sides equal in length to the radius. THIRD SCHEDULE
(Made under section 3(2)(c))
DERIVED UNITS OF SI
A derived unit means a unit derived only from the base units set and
defined in the First Schedule or the supplementary units set out and
defined in the Second Schedule or both by the process of multiplication
or division or both without the introduction of any co-efficient, unit,
excepted.

ined in the Second Schedule or both by the process of multiplication
or division or both without the introduction of any co-efficient, unit,
excepted.

The derived units of SI are defined as follows-
Physical Quantity Name of Unit Unit symbol
area square metre m²
volume or capacity cubic metre m³
speed metre per second m/s or m.s.-¹
acceleration metre per second or metre per
second squared m/s² or m.s-¹
wave number reciprocal metre 1/m or m-¹
mass density kilogram per cubic kg/m³ or kg.m-³
concentration mole per cubic metre M. ol/m³ or mol.m-³
angular speed radian per second rad/s or rad.s-¹
angular acceleration radian per second or radian
per second squared rad/s-² or rad.s-²
electric resistance ohm Ω = V.A.-¹
electric capacitance farad F = A.s.V-¹

celeration radian per second or radian
per second squared rad/s-² or rad.s-²
electric resistance ohm Ω = V.A.-¹
electric capacitance farad F = A.s.V-¹

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.106
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
electric conductance siemens S = A.V-¹
magnetic flux weber Wb=V.s
magnetic flux density, tesla T=Wb.m-² or V.s.m-²
magnetic Induction
Inductance (self and mutual) henry H = Wb.A-¹
electric charge density coulomb per cubic metre C.m.-³
electric field strength volt per metre V.m-¹
surface charge density coulomb per square metre C.m-²
permitivity farad per metre F.m-¹
force newton N = kg.m.s-²
power watt W = J.s-¹ or kg.m².s-³
moment of inertia kilogram metre squared kg.m²
frequency hertz Hz=s-¹
entropy, heat capacity (at constant
pressure and constant volume) joule per kelvin J/K. or J.K-¹
electric charge, quantity of
electricity coulomb C =A.s.

ropy, heat capacity (at constant
pressure and constant volume) joule per kelvin J/K. or J.K-¹
electric charge, quantity of
electricity coulomb C =A.s.

electric potential, electromotive
force, electric potential difference volt V = kg.m² s-³ A-¹
activity (of a radioactive source) one per second 1/s or s-¹
thermal conductivity watt per metre kelvin J.s.-¹m-¹.K-¹ = W.m-¹.K-¹
specific volume cubic metre per kilogram m³kg-¹
pressure pascal Pa = kg.m-¹ s-²
moment of force, torque, work,
energy, quantity of heat joule J = kg.m².s-²
dynamic viscosity pascal second Pa.s=kg.m-¹ .s-¹
kinematic viscosity metre squared per second m² s-¹
surface tension newton per metre N.m-¹=kg.s-²
magnetic field strength ampere per metre A.m-¹
electric current density ampere per square metre A.m-²
permeability henry per metre H.m-¹=kg.m.s-².A-²
molar entropy, molar joule per kelvin J.K-¹ mol-¹
heat capacity (at constant volume
mole and constant pressure)
molar energy, molar enthalpy joule per mole J.mol-¹
magnetic moment ampère per square metre A.m²
conductivity siemens per metre S.m-¹
radiant intensity watt per steradian W.sr-¹
radiant existance irradiance watt per steradian metre W.sr-¹ .m-²

.m²
conductivity siemens per metre S.m-¹
radiant intensity watt per steradian W.sr-¹
radiant existance irradiance watt per steradian metre W.sr-¹ .m-²

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.107
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
radiance watt per square metre W.m-²
luminance candela per square metre cd.m-²
luminous flux lumen lm=cd.sr
illuminance lux lx=lm.m-²
FOURTH SCHEDULE
(Made under section 3(2)(d))
SPECIAL OR PERMITTED UNITS OF SI
These have internationally - agreed units which are deviations from
strict SI. They are permitted either because of their practical importance
or because of their use in specialised scientific fields. The units should be used together with SI units and their multiples and
sub-multiples. The names of the permitted units, the physical quantities they represent,
their unit symbols and definitions are listed hereunder-
Physical Quantity Name of Unit Unit symbol Definition
I. time minute Min 1 min=60 s
hour h 1 h=60 min
day d 1 d=24 h
week wk 1 wk=7 d
Calendar year yr 1 yr=365 d or 366 d
(leap year)
II. plane angle degree o 1º =(n/180) radian
minute ‘ 1’=(1/60)º
second “ 1”=(1/60)º
III. volume or capacity litre l 1=1 dm³
IV. mass tonne t 1 t=1 000 kg
V.

ane angle degree o 1º =(n/180) radian
minute ‘ 1’=(1/60)º
second “ 1”=(1/60)º
III. volume or capacity litre l 1=1 dm³
IV. mass tonne t 1 t=1 000 kg
V.

pressure bar bar 1 bar=100 000 Pa
standard
atmosphere atm 1 atm=101 325 Pa
VI. area are a 1 are=100 m²
hectare ha 1 hectare=10 000 m²
VII. temperature degree Celsins ºC 1ºC=1K
VIII. marine and
aerial navigation nautical mile knot nautical mile knot
1 nautical mile=1852 m
1 knot=1 nautical mile
per hour

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.108
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
FIFTH SCHEDULE
(Made under section 3(3))
PREFIXES FOR MULTIPLES AND SUB-
MULTIPLES OF SI UNITS
The Prefixes1 for multiples and sub-multiples of the base,
supplementary and derived units of SI set out and defined in the First
to Fourth Schedules are as follows-
Prefix Symbol Definition
exa E 1018
peta P 1015
tera T 1012
giga G 109
mega M 106
kilo k 103
hecto h 102
deca da 101
deci d 10-1
centi c 10-2
mili m 10-3
micro u 10-4
nano n 10-9
pico p 10-12
femto f 10-15
atto a 10-18
1 Not applicable to the base unit “kilogram” but applicable to the one thousandth
submultiple thereof, namely the “gram”.

2
femto f 10-15
atto a 10-18
1 Not applicable to the base unit “kilogram” but applicable to the one thousandth
submultiple thereof, namely the “gram”.

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.109
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
SIXTH SCHEDULE
(Made under section 3(4))
UNITS TO BE USED IN SPECIALISED SCIENTIFIC FIELDS
Name of Unit Unit Symbol Definition
electron volt eV 1 eV=1.602 10x10−19J
unified atomic mass u 1 u=1.660 44x10−27kg
astronomical unit AU 1 AU=149 600x106m
parscc pc 1 pc=3 086x1013m
ångstrom Å 1 A=10-10m
barn b 1 b=10-28m2
curie Ci 1 Ci=3.7x1010 s-1(exactly)
gal Gal 1 Gal=10-2 metre per second, per
second
metric carat CM 1 metric carat=2x10-4kg
rad rd 1 rd=10-2J.kg-1
roentgen R IR=2.58x10-4C.kg-1
SEVENTH SCHEDULE
(Made under section 3(5))
DEFINITION OF UNITS OF MEASUREMENT
PART I
Measurement of Length
kilometre = 1 000 metres
metre = unit of mass as defined in the First Schedule
decimetre = 1/10 metre
centimetre = 1/100 metre
millimetre = 1/1 000 metre
PART II
Measurement of Area
Hectare = 100 are
decare = 10 are

irst Schedule
decimetre = 1/10 metre
centimetre = 1/100 metre
millimetre = 1/1 000 metre
PART II
Measurement of Area
Hectare = 100 are
decare = 10 are

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.110
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
are = 100 square metres
square metre = a superficial area equal to that of a
square each side of which measures
one metre
square decimetre = 1/100 square metre
square centimetre = 1/100 square decimetre
square millimetre = 1/100 square centimetre
PART III
Measurement of Volume
cubic metre = a volume equal to that of a cube each
edge of which measures one metre
cubic decimetre = 1/1 000 cubic metre
cubic centimetre = 1/1 000 decimetre
PART IV
Measurement of Capacity
hectolitre = 100 litres
litre = the capacity equal to that of a cube each edge
of which measures 1 decimetre
decilitre = 1/10 litres
centilitre = 1/100 litres
millilitre = 1/1 000 litre
PART V
Measurement of Mass or Weight
metric ton or tonne = 1 000 kilogram
quintal = 100 kilograms
kilogram = unit of mass as defined in the First
Schedule
hectogram = 1/10 kilogram
gram = 1/1 000 kilogram
carat (metric) = 1/5 gram
milligram = 1/1 000 gram

m = unit of mass as defined in the First
Schedule
hectogram = 1/10 kilogram
gram = 1/1 000 kilogram
carat (metric) = 1/5 gram
milligram = 1/1 000 gram

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.111
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
PART VI
Measurement of Electricity
The following units of measurement, that is to say-
(a) The ampère (as the unit of measurement of electrical current);
(b) The ohm (as the unit of measurement of electrical resistances);
(c) The volt (as the unit of measurement of difference of electrical
potential); and
(d) The watt (as the unit of measurement of electrical power),
shall have the meanings respectively assigned by order by the Minister,
being the meaning appearing to the Minister to reproduce in English
the International definition of the ampère, ohm, volt or watt, in force at
the date of the making of the order. 1 kilowatt = 1 000 watts
1 megawatt = 1 000 000 watts
PART VII
Measurement of Time
hour = 60 minutes
minute = 60 seconds
second = as defined in the First Schedule
PART VIII
Customary terms of Weights and Measures in use in trade:
Capacity measures - “debe” - 20 litres. EIGHTH SCHEDULE
(Made under section 3(6))
PHYSICAL WEIGHTS AND MEASURES
LAWFUL FOR USE IN TRADE
1.

e in trade:
Capacity measures - “debe” - 20 litres. EIGHTH SCHEDULE
(Made under section 3(6))
PHYSICAL WEIGHTS AND MEASURES
LAWFUL FOR USE IN TRADE
1.

Measures of Capacity–
Any multiple of 10 litres 100 millilitres
10 litres 50 millilitres
5 litres 25 millilitres
2.5 litres 20 millilitres
2 litres 10 millilitres
1 litre 5 millilitres
500 millilitres 2 millilitres
250 millilitres 1 millilitre

tres 25 millilitres
2.5 litres 20 millilitres
2 litres 10 millilitres
1 litre 5 millilitres
500 millilitres 2 millilitres
250 millilitres 1 millilitre

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.112
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
2. Weights of–
20 kilograms 500 milligrams
10 kilograms 200 milligrams
5 kilograms 100 milligrams
2 kilograms 50 milligrams
1 kilogram 20 milligrams
500 grams 10 milligrams
200 grams 5 milligrams
100 grams 2 milligrams
50 grams 1 milligram
20 grams
10 grams
5 grams
2 grams
1 gram
3.Metric Carat Weights-
500 carats 0.5 carat
200 carats 0.25 carat
100 carats 0.2 carat
50 carats 0.1 carat
20 carats 0.05 carat
10 carats 0.02 carat
5 carats 0.01 carat
2 carats 0.005 carat
1 carat
4. Square Measures–
Measures of, or of any multiple of, 1 square decimetre.
5. Cubic Measures–
Measures of, or any multiple of 0.1 cubic metre
6. Measures of length–
50 metres 500 millimetres
20 metres 200 millimetres
10 metres 100 millimetres
5 metres 50 millimetres
2 metres 20 millimetres
1 metre 10 millimetres

–
50 metres 500 millimetres
20 metres 200 millimetres
10 metres 100 millimetres
5 metres 50 millimetres
2 metres 20 millimetres
1 metre 10 millimetres

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.113
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
7. Customary measures of capacity–
nusu koroboi 0.05 litre
koroboi 0.1 litre
robo kibaba 0.25 litre
nusu kibaba 0.5 litre
kibaba 1 litre
pishi 4 litre
NINTH SCHEDULE
(Made under section 7(b))
FORM A
FORM OF CERTIFICATE OF VERIFICATION
OF SECONDARY STANDARDS
We hereby certify that the several Secondary Standards ......................... .......................................................................................................................... .......................................................................................................................... ......................................................................................................................... have been this day, duly compared in our presence and found to agree
with the National Standard.

..................................................... have been this day, duly compared in our presence and found to agree
with the National Standard.

.................................................................) Inspector of the Secondary
Standards
.................................................................)
.................................................................)
Authorised Institution
(..........................................)
Dated this ................ day of ............... 20....

.......................)
Authorised Institution
(..........................................)
Dated this ................ day of ............... 20....

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.114
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
FORM B
CERTIFICATE OF EXAMINATION OF WORKING STANDARDS
(Made under section 10(2))
I hereby certify that the several working standards at ............................. .......................................................................................................................... Weights and Measures office viz. ............................................................... ........................................................................................................................... ........................................................................................................................... have been, this day, duly compared by me and found to agree with the
Secondary Standards. Dated this ................ day of ............... 20....... ......................................................... Inspector of Weights and Measures
TENTH SCHEDULE
(Made under section 26(1))
MANNER AND QUANTITY OF PACKAGING PRE-
PACED GOODS AND FARM PRODUCE
1.

.... Inspector of Weights and Measures
TENTH SCHEDULE
(Made under section 26(1))
MANNER AND QUANTITY OF PACKAGING PRE-
PACED GOODS AND FARM PRODUCE
1.

For the purpose of this Schedule, unless the context requires
otherwise-
“farm produce” includes crop produce, water bodies products,
forest products, livestock products and any other
product which is a result of farm yields;
“pre-packed goods” means any commodity that is made up
as a unit or entity and for which its quantity has
been determined and indicates on its label prior to
being offered for trade irrespectively of whether such
unit or entity is enclosed in a container, wrapped or
unenclosed. GN. No. 725 of 2018
Interpretation

offered for trade irrespectively of whether such
unit or entity is enclosed in a container, wrapped or
unenclosed. GN. No. 725 of 2018
Interpretation

©2025 Government of Tanzania. All rights reserved. No part of this book may be reproduced or distributed without permission of OAG.115
THE WEIGHTS AND MEASURES ACT [CAP. 340 R.E. 2023]
2.–(1) The packaging of farm produce shall be in weight, number,
volume or length.
(2) For the purpose of sub paragraph (1), farm produce packed in-
(a) number, shall not exceed a weight of 100kg;
(b) weight, shall not exceed the weight of 100kg, with tolerance
of +5 kg.
(3) Notwithstanding the provision of this paragraph, the
Commissioner may, upon request in writing, allow farm produce to be
packaged in the quantities as he may think appropriate.
3.–(1) Pre-packed goods other than farm produce shall be labeled and
declared in quantities of weight, volume, number, or length.
(2) Notwithstanding subparagraph (1), the Commissioner may,
upon request in writing, allow pre-packed goods to be labeled as
specified in this paragraph.
Manner and
quantities of
packaging farm
produce
Labeling and
declaration of
pre-packed goods

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