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 a pattern of a liquid flowmeter ... : submitted by Bardon Systems Ltd.
Great Britain.Department of Trade and Industry.
National Weights and Measures Laboratory.
Bardon Systems Ltd.
Teddington : National Weights and Measures Laboratory,
1994.
"Reference no: STD 6424"