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.