Regulation 16
Subject to Regulation 17 below, every capacity serving measure submitted to an inspector for testing shall be tested by him by one of the following methods —
volumetrically, by comparison with one or more local or working standards of capacity, or by means of appropriate testing equipment which complies with the Weights and Measures (Local and Working Standard Capacity Measures and Testing Equipment) Regulations 1987f1; or
gravimetrically, by determining the weight of an equivalent volume of water of a known temperature using suitable weights and a suitable weighing machine which complies with the requirements of the Weights and Measures (Local and Working Standard Weights and Testing Equipment) Regulations 1986f2 and which has a discrimination threshold in grams equivalent to one-fifth of the amount in millilitres of the appropriate limit of error set out in column 2 of Table 1 or Table 2 as the case may be in the Schedule to these Regulations.