subsequent verificationmeasuring instrumentmandatory periodic verificationLegal metrology activities <div class="ui-collapsible-content ui-body-inherit" aria-hidden="false"> <p class="NoteEx">Note 1 Subsequent verification includes</p> <p class="NoteEx">• mandatory periodic verification,</p> <p class="NoteEx">• verification after repair, and</p> <p class="NoteEx">• voluntary verification.</p> <p class="NoteEx">Note 2 Subsequent verification of a <span class="AnchorInNote">measuring instrument</span> may be carried out before expiry of the period of validity of a previous verification either at the request of the user (owner) or when its verification is declared to be no longer valid.</p> </div>