Certificate pursuant to Section 12 of the Weights and Measures Act 1985 ... certification no. 1918/72 ... the Secretary of State for Trade and Industry hereby certifies as suitable for use for trade a pattern of a liquid flowmeter ... submitted by E.K. Williams Ltd.
Great Britain.Department of Trade and Industry.
E.K. Williams Ltd.
National Weights and Measures Laboratory.
Teddington : National Weights and Measures Laboratory,
2005.
"3 March 2005"
Reference no. STD/T1118/0008.