# The Measuring Instruments Regulations 2016, Regulation 51: Prohibition on improper use of the UK marking and the M marking

Extent: E+W+S

(1) An economic operator must not affix the UK marking or the M marking to a regulated measuring instrument unless—
(a) that economic operator is the manufacturer of the regulated measuring instrument; and
(b) the conformity of the regulated measuring instrument with the essential requirements has been demonstrated by a relevant conformity assessment procedure.
(2) An economic operator must not affix a marking to a regulated measuring instrument which is not the UK marking or the M marking but which purports to attest that the regulated measuring instrument satisfies the essential requirements.
(3) An economic operator must not affix to a regulated measuring instrument a marking, sign or inscription which is likely to mislead any other person as to the meaning or form of the marking.
(4) An economic operator must not affix to a regulated measuring instrument any other marking if the visibility, legibility and meaning of the UK marking or the M marking would be impaired as a result.

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Source: https://www.legislation.gov.uk/uksi/2016/1153/regulation/51 (the official version)
Page: https://openlegislation.uk/measuring-instruments-regulations-2016/regulation-51
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.