"Boucher" circular calculator, by Stanley, (glass

Made:
1880-1890 in Holborn
maker:
William Ford Stanley

"Boucher" circular calculator, by Stanley, Great Turnstile, London

Details

Category:
Mathematics
Object Number:
1908-138
Materials:
steel, glass and paper
Measurements:
overall: 15 x 60 x 75 mm
type:
circular slide rule
credit:
J.C. Stevens Auction House