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 self-indicating non-automatic weighing machine.
Great Britain.Department of Trade and Industry.
Weighmaster Scales Limited.
National Weights and Measures Laboratory.
Teddington : National Weights and Measures Laboratory,
1990.
Reference no STD 6189
Weighing-machines