Certificate pursuant to section 12 of the Weights and Measures Act 1985 certification no 2547 ... the Secretary of State for Trade and Industry hereby certifies as suitable for use for trade a pattern of an automatic weighing machine for dispensing predetermined loads of powdered or granular materials having the following characteristics ... : submitted by Avalon Engineering Ltd.
Great Britain.Department of Trade and Industry.
National Weights and Measures Laboratory.
Teddington : National Weights and Measures Laboratory,
1999.
Reference no. STD 9687.