(1) The testing of a measuring instrument for the purpose of verification, reverification or in-service inspection must be carried out in accordance with this regulation.
(2) If the measuring instrument is fixed, the testing must be carried out with the instrument in its fixed position.
(3) If the measuring instrument is movable and has a base, the testing must be carried out with the instrument on a level plane or, if this is not practicable, on a plane that is as nearly level as possible.
(4) Subregulation (3) does not apply to the extent that the certificate of approval for the measuring instrument sets out a different requirement for testing.
(5) If the measuring instrument is transportable, and the results obtained by its use are affected by gravity, the testing must be carried out in a way that compensates for the conditions applicable in the region in which the instrument:
(a) is used; or
(b) is to be used.