(1) An instrument, equipment or installation prescribed under a regulation that is used in accordance with any conditions prescribed under a regulation is taken, in the absence of evidence to the contrary—(a) to be accurate and precise; and(b) to have been used by an appropriately qualified person.
(2) A party to the proceeding intending to challenge a matter mentioned in subsection (1) (a) or (b) , must give at least 28 days notice of the party’s intention to adduce relevant evidence.