"Unitas" calculating machine

Made:
1909-1909 in Berlin
Unitas Calculating machine

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Unitas Calculating machine
Science Museum Group Collection
© The Board of Trustees of the Science Museum

"Unitas" calculating machine, Thomas de Colmar type with two slides and lid.

Details

Category:
Mathematics
Object Number:
1909-167
type:
calculating machine (arithmometer)
credit:
J.C. Stevens Auction House

Parts