All bottles and measures, used in measuring and selling petroleum products, shall conform to the following specifications:
(a) All bottles must be legal type with a line blown in the bottle, denoting capacity of bottle.
(b) Dented or damaged standard liquid measures are prohibited.
(c) Vendors shall not deliver liquid petroleum products in measures larger than necessary, i.e.:
1 quart of oil in a 1/2 gallon measure.
3 quarts of oil in a gallon measure.