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 following pattern of a liquid measuring instrument (metering measuring system) : submitted by the Drum Engineering Co. Ltd.
Great Britain.Department of Trade and Industry.
National Weights and Measures Laboratory.
Drum Engineering Company Limited.
Teddington : National Weights and Measures Laboratory,
1991.
Reference No : STD 6230
Weights and measures
Liquid feeders.