Addometer adding machine with eight stylus-operated dials, c 1925.

Made:
1900-1920 in Chicago

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Addometer adding machine with 8 stylus-operated dials, made by the Reliable Typewriter and Adding Machine Co., Chicago, in case with instruction sheet.

Addometer adding machine c.1925 with instruction sheet. Made by the Reliable Typewriter and Adding Machine Company of Chicago, USA, the Addometer was a popular adding machine based on Blaise Pascal's (1623-1662) design of 250 years earlier.

Details

Category:
Mathematics
Object Number:
1989-600
type:
adding machine (stylus), adding machine (stylus), adding machines (stylus)
credit:
Auction Team Koln
status:
Permanent collection

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