Decitrig model Log-Log Duplex slide rule with leather case by Keuffel & Esser Company

Made:
1940-1950 in New York

Decitrig model Log-Log Duplex slide rule with leather case by Keuffel & Esser Company, New York, USA.

Details

Category:
Mathematics
Object Number:
2000-431
Materials:
wood, plastic, brass and leather
Measurements:
overall: 12 x 315 x 50 mm
type:
slide rule (log-log)
credit:
Mr G.H.E. Hardwick

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