CHM Revolution
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The Original “Pocket Calculator”
Jetons
Appears In:
The Original “Pocket Calculator”
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Details
Description
Date Introduced
1600 ca.
Photographer
Richards, Mark
Dimensions
overall: 1/4 in x 8 in x 8 in.
Credit Line
Gift of Michael R. Williams
Copyright Owner
© Mark Richards
Location
Germany
Keywords
Germany; Hand calculation; Table Abacus; Counting board
Object ID
102716302
Table abacuses used loose markers (“Jetons”) with decorative patterns.