18. (1) A person shall obliterate any inspector's mark or licensee's mark that a measuring instrument bears when the person does anything to the measuring instrument (including repair, modification and commissioning) that affects its metrological performance, unless that effect can be corrected by normal operational adjustment of the instrument.
(2) A person who fails to comply with subsection (1) is guilty of an offence.
Penalty: $20,000.
(3) This section applies whether or not the person is a licensee.