Section 15(4) in The West Bengal Standards Of Weights And Measures (Enforcement) Act, 1958
(4)Where an Inspector has reasons to believe that a sealed package or container purporting to contain any net weight or measure of any article ordinarily sold by weight or measure does not actually contain the net weight or measure of the article which it purports to contain, the Inspector may, in the presence of witnesses, break open the sealed container and verify its contents.
