Slide-rule, plastic, 11 3/4" x 1 5/8", Omega serie

Made:
1959 in Luton

Slide-rule, plastic, 11 3/4" x 1 5/8", Omega series, no.401, having adjustable tension, with small 1-inch screwdriver and cursor; in box

Details

Category:
Mathematics
Object Number:
1959-169
type:
slide rule
credit:
Blundell Rules Ltd.