reg 5 Exception for trade fairs, exhibitions and demonstration
Nothing in these Regulations prevents the showing and use of a regulated measuring instrument which is not in conformity with the requirements of these Regulations at a trade fair, exhibition or demonstration for the marketing of regulated measuring instruments, provided that a visible sign clearly indicates— (a) the name and date of the trade fair or exhibition; (b) that the instrument is not in conformity with these Regulations; and (c) that the instrument is not available for sale until brought into conformity with these Regulations.