Thornton P.I.C. No.171/PC17 (10-inch) slide rule b

Made:
1955-1965 in England
maker:
A G Thornton Limited

Thornton P.I.C. No.171/PC17 (10-inch) slide rule by A.G. Thornton Limited with cardboard case

Details

Category:
Mathematics
Object Number:
1998-432
Materials:
complete and plastic
type:
slide rule
credit:
Mr J.C. Michie