Section 1(4) in The Standards of Weights and Measures (Packaged Commodities) Rules, 1977
(4)They shall come into force on such date as the Central Government may, by notification, appoint, and different dates may be appointed for-(i)different provisions of these rules, and(ii)different commodities or classes of commodities, and any reference in any provision to the commencement of these rules shall be construed as a reference to the coming into force of that provision or to the coming into force of these rules in relation to any commodity or classes of commodities, as the case may be:Provided that they shall come into force in the State of Sikkim on the date on which Chapter IV of Part IV of the Act comes into force in that State.
