Regulation 24 Disqualification stickers (instruments not complying with these Regulations etc)
Subject to paragraph (2) below, an authorised person may affix a disqualification sticker to an instrument if he is satisfied that the instrument—
falls outside the limits of error referred to in paragraph 4.2 of Annex I of the Directive which is set out in Schedule 2; or
otherwise does not fully comply with the requirements which apply to it,
and a disqualification sticker shall be so affixed as to be clearly visible when the instrument is in its regular operating position.
Save in a case where regulation 25 has effect, where an instrument does not fully satisfy the requirements of regulation 5 which apply to it but it appears to the authorised person that the nature or degree of non-compliance is not such that a disqualification sticker should be immediately affixed to it, he may give to any person in possession of the instrument a notice requiring him to ensure that the instrument is brought within the limits of error mentioned in paragraph (1)(a) above, or made to comply with the requirements which apply to it, before the expiry of twenty-eight days or such shorter period as may be specified in the notice.
If a notice given under paragraph (2) above is not complied with, the authorised person shall affix a disqualification sticker to the instrument in such a position that the sticker is clearly visible when the instrument is in its regular operating position.