(2) Any weight er 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.
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(2) Any numeral which conforms to the provisions of section 6 shal! be the standard numeral.
(3) No weight, measure or numeral, other than the standard weight, measure or numeral, shall be used ss a standard weight, measure or numeral.
if) 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, (7) 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,
(7) 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. Anv 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.