# The Weights and Measures (Local and Working Standard Weights and Testing Equipment) Regulations 1986, Regulation 4


Working standard weights shall be tested against local standard weights by the method of substitution.

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Source: https://www.legislation.gov.uk/uksi/1986/1685/regulation/4 (the official version)
Page: https://openlegislation.uk/weights-and-measures-local-and-working-standard-weights-and-testing-equipment-regulations-1986/regulation-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.