law: Standards of Weights and Measures (Enforcement) Act, 1985
  60. Presumption to be
  
  made in certain cases.-
  1.  If
  
  any person--
  a.   makes or
  
  manufactures, or causes to be made or manufactured, any false weight or
  
  measure, or
  b.   uses, or causes to be
  
  used, any false or unverified weight or measure in any transaction or for industrial
  
  production or for protection, or
  c.   sells, distributes,
  
  delivers or otherwise transfers, or causes to be sold, distributed, delivered
  
  or otherwise transferred, any false or unverified weight or measure, it shall
  
  be presumed, until the contrary is proved, that he had done so with the
  
  knowledge that the weight or measure was a false or unverified weight or
  
  measure, as the case may be.
  2.  If
  
  any person has in his possession, custody or control any false or unverified
  
  weight or measure in such circumstances as to indicate that such weight or
  
  measure is likely to be used in any transaction or for industrial production or
  
  for protection, it shall be presumed, until the contrary is proved, that such
  
  false or unverified weight or measure was possessed, held or controlled by such
  
  person with the intention of using the same in any transaction or for
  
  industrial production or for protection.