The requirements for
verification, re-verification, certification or re-certification of a
measuring instrument are as follows —
(a) the
instrument must operate within the appropriate limits of error that may be
tolerated under the National Measurement Act at verification;
(b) the
instrument must be of an approved pattern;
(c) the
instrument must have no graduations in a unit of measurement other than a unit
of measurement under the metric system of measurement (as defined in the
National Measurement Act) except —
(i)
in circumstances that are prescribed as exempt from this
paragraph; or
(ii)
in a case determined by the Commissioner to be a special
case.