Sch 6 para 10 Requirements for use for trade
No person shall use for trade a measuring system unless— (a) it is compliant with the essential requirements other than the provisions relating to maximum permissible errors; (b) it is erected an installed so as to facilitate testing; (c) it operates within the maximum permissible errors in paragraph 11; and (d) the requirements of paragraphs 12 and 13 are complied with.