Nelson-Jones circuit designer's (10-inch) slide rule

Made:
1970-1975 in England

Nelson-Jones circuit designer's (10-inch) slide rule, designed by Key Electonics Bownment and made by Blundell Harling Limited with plastic sleeve

Details

Category:
Mathematics
Object Number:
1998-452
Materials:
plastic and complete
Measurements:
overall: 10 x 305 x 40 mm
type:
slide rule (electrical engineering)
credit:
Mr J.C. Michie