Certificate pursuant to Section 12 of the Weights and Measures Act 1985, certification no 1918/33 ... the Secretary of State for Trade and Industry hereby certifies as suitable for use for trade a pattern of a liquid flowmeter : Submitted by: Harpur Forecourt Services.
Great Britain.Department of Trade and Industry.
National Weights and Measures Laboratory.
Harpur Forecourt Services (Firm)
Teddington : National Weights and Measures Laboratory,
1995.
Reference no. STD 7831.