17. Section 18 of the principal Act is repealed and the following section substituted therefor:
—(1) Subject to the provisions of this Part, any person who —
in relation to any matter, work, goods or other thing, makes or enters into any contract, or engages in any dealing or transaction, by reference to any weight or measure other than a weight or measure of the metric system;
uses for trade any weight or measure other than a weight or measure of the metric system;
uses for trade any weighing or measuring instrument other than a weighing or measuring instrument which weighs or measures only by reference to weights or measures other than weights or measures of the metric system; or
in the course of or for the purposes of any trade or business, uses, whether on any package, or in any price list or advertisement or otherwise, any unit of a weight or measure other than a weight or measure of the metric system, in advertising, displaying, or exposing goods for sale,
shall be guilty of an offence.
(2) Nothing in subsection (1)(d) shall apply to the use by any person of any unit of a weight or measure which is not a unit of a weight or measure of the metric system on any goods displayed or exposed for sale by retail or on the package of any such goods or on both if —
that unit is additional to a unit of a weight or measure of the metric system; and
that unit, the figures in which that unit and the numerical value of that unit are marked no larger than those of that metric weight or measure.”.