Certificate pursuant to section 12 of the Weights and Measures Act 1963 ... the Secretary of State for Trade [and Industry] hereby certifies as suitable for use for trade the following pattern of a self-indicating counter machine submitted by W & T Avery Ltd
Great Britain.Department of Trade and Industry.
National Weights and Measures Laboratory.
W & T Avery Ltd.
London National Weights and Measures Laboratory
1985
Weighing-machines