Circular slide rule for calculation in simple inte

Made:
France

Circular slide rule for calculation in simple interest, 4 3/4 inch diameter, in card, with celluloid cursor in metal mount, with pamphlet "Instruction pour l'emploi du Nouveau cercle a calculs"

Details

Category:
Mathematics
Object Number:
1927-408
type:
circular slide rule
credit:
Mr L. Malassis
status:
Permanent collection

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