Section 186. Possession and use of false devices; responsibility

1.  No
  person shall retain in his possession any weight,  measure  or  weighing
  and  measuring  device or system, knowing it to be false, with intent to
  use it or permit  to  be  used  for  determining  the  quantity  of  any
  commodity.  Possession  of  the  same shall be prima facie evidence of a
  violation of this section.
    2. For the purpose of purchase, sale or service, no person shall use a
  false weight, measure, device or system for determining the quantity  of
  any  commodity.    If  the seller furnishes the weight or measure of the
  commodity sold, he shall not sell or deliver less of any such  commodity
  than  the  quantity  represented  to be sold; if the buyer furnishes the
  weight or measure of the commodity purchased, he shall  not  receive  or
  accept  more  of  any such commodity than the quantity represented to be
  purchased.