http://www.legislation.gov.uk/nisi/1981/231/schedule/2/part/V/chapter/2/paragraph/wrapper25n1/2006-01-01Weights and Measures (Northern Ireland) Order 1981texttext/xmlenStatute Law Database2017-09-152006-01-01Weights and Measures (Northern Ireland) Order 1981The Weights and Measures (Northern Ireland) Order 1981art. 22A(2)(b)(ba)The Food (Amendment) (EU Exit) Regulations 2019reg. 2(2)(a)reg. 1SCHEDULESSCHEDULE 2UNITS OF MEASUREMENT LAWFUL FOR USE FOR TRADEPART VMEASUREMENT OF MASS OR WEIGHTMetric unitsTonne