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IBM Archives > Exhibits > Antique attic, vol. 3 > 
Artifacts list for vol. 3, items I-L >

Layton Calculator
 
 
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Layton Calculator
 
This calculating machine, circa 1883-1910, is of the arithmometer type invented by Charles Xavier Thomas de Colmar in 1820, and is part of the IBM Collection of historical calculating devices begun by Thomas J. Watson, Sr., in the 1930s.