§ 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.