The Weights and Measures Regulations 1963

137.—(1) Subject to paragraph (3) of this regulation, in the case of an automatic weighing machine of a pattern in respect of which a certificate of approval granted or deemed to have been granted under section 12 of the Weights and Measures Act 1963 is in force (or of a pattern modified in accordance with an authorisation for the time being in force under the said section 12), if, in the course of carrying out test A in the manner specified in paragraph (1)(a) of regulation 136, the weight of any of the test loads exceeds the purported weight of that load by more than one-half per cent of the said purported weight, the machine shall, when appropriate, be subjected to the further test (hereinafter referred to as “test B”) described in paragraph (2) of this regulation.

(2) For the purposes of test B, there shall be extracted from each of those test loads used in test A (the weight of which was found to exceed the relevant amount specified in paragraph (1) of this regulation) that single piece or item appearing to the inspector to be the largest single piece or item in that test load; and the machine shall then be subjected to test by re-weighing each such test load as so modified on another weighing instrument.

(3) This regulation shall not apply to automatic weighing machines of a capacity of 10 pounds or more, or to automatic weighing machines for use only for weighing solid fuel or for use only for weighing potato crisps, or to totalising weighing machines.