2 Free Photos of Thomas Arithmometer

cc-zerofiles uploaded by daderot
Tomas De Colmer Arithmometer, 1821 - Ridai Museum of Modern Science, Tokyo - DSC07591
self-published workcc-zero
Arithmometre, designed by Charles Xavier Thomas, c. 1820, for the four rules of arithmetic, manufactured 1866-1870 AD, TM10901 - Tekniska museet - Stockholm, Sweden - DSC01567
calculators in the tekniska museetself-published work
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