4. Units of weights and measures to be based on metric system.—Every unit of weight or measure
shall be in accordance with the metric system based on the international system of units.
5. Base unit of weights and measures.—(1) The base unit of—
(i) length shall be the metre;
(ii) mass shall be the kilogram;
(iii) time shall be the second;
(iv) electric current shall be the ampere;
(v) thermodynamic temperature shall be the kelvin;
(vi) luminous intensity shall be the candela; and
(vii) amount of substance shall be the mole.
(2) The specifications of the base units mentioned in sub-section (1), derived units and other units
shall be such as may be prescribed.
6. Base unit of numeration.—(1) The base unit of numeration shall be the unit of the international
form of Indian numerals.
(2) Every numeration shall be made in accordance with the decimal system.
(3) The decimal multiples and sub-multiples of the numerals shall be of such denominations and be
written in such manner as may be prescribed.
6
7. Standard units of weights and measures.—(1) The base units of weights and measures specified
in section 5 shall be the standard units of weights and measures.
(2) The base unit of numeration specified in section 6 shall be the standard unit of numeration.
(3) For the purpose of deriving the value of base, derived and other units mentioned in section 5, the
Central Government shall prepare or cause to be prepared objects or equipments in such manner as may
be prescribed.
(4) The physical characteristics, configuration, constructional details, materials, equipments,
performance, tolerances, period of re-verification, methods or procedures of tests shall be such as may be
prescribed.
8. Standard weight, measure or numeral.—(1) Any weight or measure which conforms to the
standard unit of such weight or measure and also conforms to such of the provisions of section 7 as are
applicable to it shall be the standard weight or measure.
(2) Any numeral which conforms to the provisions of section 6 shall be the standard numeral.
(3) No weight, measure or numeral, other than the standard weight, measure or numeral, shall be used
as a standard weight, measure or numeral.
(4) No weight or measure, shall be manufactured or imported unless it conforms to the standards of
weight or measure specified under section 8:
Provided that provisions of this section shall not apply for manufacture done exclusively for export or
for the purpose of any scientific investigation or research.
9. Reference, secondary and working standard.—(1) The reference standards, secondary standards
and working standards of weights and measures shall be such as may be prescribed.
(2) Every reference standard, secondary standard and working standard shall be verified and stamped
in such manner and after payment of such fee as may be prescribed.
(3) Every reference standard, secondary standard and working standard which is not verified and
stamped in accordance with the provisions of sub-section (2) shall not be deemed to be a valid standard.
10. Use of weight or measure for particular purposes.—Any transaction, dealing or contract in
respect of any goods, class of goods or undertakings shall be made by such weight, measure or number as
may be prescribed.
11. Prohibition of quotation, etc., otherwise than in terms of standard units of weight, measure
or numeration.—(1) No person shall, in relation to any goods, things or service,—
(a) quote, or make announcement of, whether by word of mouth or otherwise, any price or
charge, or
(b) issue or exhibit any price list, invoice, cash memo or other document, or
(c) prepare or publish any advertisement, poster or other document, or
(d) indicate the net quantity of a pre-packaged commodity, or
(e) express in relation to any transaction or protection, any quantity or dimension, otherwise than
in accordance with the standard unit of weight, measure or numeration.
(2) The provisions of sub-section (1) shall not be applicable for export of any goods, things or service.
12. Any custom, usage, etc., contrary to standard weight, measure or numeration to be void.—
Any custom, usage, practice or method of whatever nature which permits a person to demand, receive or
cause to be demanded or received, any quantity of article, thing or service in excess of or less than, the
quantity specified by weight, measure or number in the contract or other agreement in relation to the said
article, thing or service, shall be void.