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 patterns of liquid flowmeters : submitted by Ferranti Industrial Electronics Ltd.
Great Britain.Department of Trade and Industry.
National Weights and Measures Laboratory.
Ferranti Industrial Electronics Limited.
Teddington : National Weights and Measures Laboratory,
1987.
Liquid feeders.
Weights and measures