Certificate pursuant to section 12 of the Weights and Measures Act 1963 ... the Secretary of State for Trade and Industry hereby certifies as suitable for use for trade the following patterns of self indicating platform weighing machine : submitted by Salter Industrial Measurement Ltd
Great Britain.Department of Trade and Industry.
National Weights and Measures Laboratory.
Salter Industrial Measurements Limited.
London : National Weights and Measures Laboratory,
1985.
Weighing-machines
Weights and measures