National Measurement Regulations 1999

An appointment as a verifying authority must state:

the kind or kinds of reference standards of measurement and physical quantities of artefacts (if any) to which the appointment applies; and

the range of denominations of standards of measurement and physical quantities of artefacts (if any) that may be verified by the appointee; and

the least uncertainty with which standards of measurement and physical quantities of artefacts (if any) may be verified by the appointee.

A verifying authority may arrange for the testing needed for verification of a standard of measurement or physical quantity of an artefact to be conducted by another body or person under the supervision of the authority.