Fowler long scale calculator, circular slide rule

Made:
1920-1940 in Manchester urban district

Fowler long scale calculator, circular slide rule with carrying case and instruction booklet, 1920-40.

Details

Category:
Mathematics
Object Number:
1999-985
Materials:
complete, metal and paper
Measurements:
overall (estimate): 10 x 70 x 70 mm
type:
circular slide rule
credit:
Caussy, D. S. (Mr.)

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