Certificate pursuant to section 12 of the Weights and Measures Act 1985 ... the Secretary of State for Trade and Industry hereby certifies as suitable for use for trade the following pattern of a self-indicating and price computing counter weighing machine : submittedby Herbert & Sons Ltd.
Great Britain.Department of Trade and Industry.
Herbert & Sons Ltd.
National Weights and Measures Laboratory.
Teddington : National Weights and Measures Laboratory,
1987.
Weights and measures
Weighing-machines.