# The Weights and Measures Regulations 1963, Regulation 42


(1) Apothecaries weights and troy weights of a purported value of 1 ounce or more shall be made of stainless steel, brass, gunmetal or bronze and shall be of the cylindrical type and provided with carrying handles or knobs.
(2) Grain weights, apothecaries weights, troy weights and pennyweights of a purported value of less than 1 ounce shall be made of any of the metals aforesaid and may, in addition, be made of platinum, aluminium or aluminium alloys, and shall be of the flat or wire type.

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Source: https://www.legislation.gov.uk/uksi/1963/1710/regulation/42 (the official version)
Page: https://openlegislation.uk/weights-and-measures-regulations-1963/regulation-42
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.