Hemmi 'Sun' No.P280 (10-inch) slide rule with pla

Made:
1960-1970 in Japan

Hemmi 'Sun' No.P280 (10-inch) slide rule with plastic case and instructions

Details

Category:
Mathematics
Object Number:
1998-447
Materials:
cardboard, complete, paper and plastic
type:
slide rule
credit:
Mr J.C. Michie