# The Weights and Measures Regulations 1963, Regulation 18


Liquid capacity measures, if their maximum purported values are clearly defined, may have a top rim, lip or retaining edge to prevent spilling:
Provided that—
(a) in the case of measures made of metal for the sale of milk and in the form of churns, the top rim, lip or retaining edge shall not increase the capacity of the measure by more than 25 per cent. of its maximum purported value;
(b) in the case of other measures, the top rim, lip or retaining edge shall not increase the capacity of the measure by more than 10 per cent. of its maximum purported value.

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Source: https://www.legislation.gov.uk/uksi/1963/1710/regulation/18 (the official version)
Page: https://openlegislation.uk/weights-and-measures-regulations-1963/regulation-18
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.