Certificate pursuant to Section 12 of the Weights and Measures Act 1985, certification no 2443 ... the Secretary of State for Trade and Industry hereby certifies as suitable for use for trade a pattern of a liquid flowmeter ... submitted by: Schlumberger Electronic Transactions RPS Div.
Great Britain.Department of Trade and Industry.
National Weights and Measures Laboratory.
Schlumberger Electronic Transactions RPS Div.
Teddington : National Weights and Measures Laboratory,
1997.
Reference no. STD 8318.