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 weighbridge : submitted by Pye Unicam.
Great Britain.Department of Trade and Industry.
National Weights and Measures Laboratory.
Pye Unicam Ltd.
Teddington : National Weights and Measures Laboratory,
1989.
Weighing-machines
Weights and measures