reg 51 Prohibition on improper use of the UK marking and the M marking
(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.