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 trade the following pattern of a liquid flowmeter : submitted by Dresser UK Ltd.
Great Britain.Department of Trade and Industry.
National Weights and Measures Laboratory.
Dresser UK Limited.
Teddington : National Weights and Measures Laboratory,
1987.
Liquid feeders.
Weights and measures