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 folowing pattern of a liqid flowmeter : submitted by Mannesmann Information Systems Ltd ...
Great Britain.Department of Trade and Industry.
Mannesmann Information Systems Limited.
National Weights and Measures Laboratory.
Teddington : National Weights and Measures Laboratory,
1991.
Reference no STD 5270
Flow meters