Sch 6 para 18 Manner of use
Where an automatic catchweigher is marked with a measurement range, no person may use the catchweigher for trade for determining a weight outside that range in relation— (a) to, or to articles made from, gold, silver or other precious metals, including gold or silver thread or fringe; (b) to precious stones or pearls; or (c) to drugs or other pharmaceutical products.