Certificate pursuant to Section 12 of the Weights and Measures Act 1985, certification no 2713 ... the Secretary of State for Trade and Industry hereby certifies as suitable for use for trade a pattern of a liquid measuring instrument (cold water meter) ... submitted by:  Severn Trent Metering Services Ltd.
Great Britain.Department of Trade and Industry.
National Weights and Measures Laboratory.
Severn Trent Metering Services Ltd.
Teddington : National Weights and Measures Laboratory,
2004.
Reference no. STD 11183.