Sch 1B Pt 8 para 5 Verification of conformity by examination and testing of every instrument
All regulated measuring instruments shall be individually examined and appropriate tests, set out in the relevant designated standards and/or normative documents, and/or equivalent tests set out in other relevant technical specifications, shall be carried out to verify their conformity with the requirements that apply to them. In the absence of such a designated standard, or normative document, the approved body concerned shall decide on the appropriate tests to be carried out.