2Subject to paragraph 3 below, goods to which this Part of this Schedule applies—
(a)unless pre-packed, shall be sold only by net weight or by capacity measurement,
(b)shall be pre-packed only if the container is marked with an indication of quantity either by net weight or by capacity measurement, and
(c)in the case of lubricating oil in a quantity of one quart or less, shall be made up in a container for sale otherwise than by way of pre-packing only if the container is marked with an indication of quantity by capacity measurement