Image: Arithmometre, designed by Charles Xavier Thomas, c. 1820, for the four rules of arithmetic, manufactured 1866-1870 AD, TM10901 - Tekniska museet - Stockholm, Sweden - DSC01567
Size of this preview: 800 × 477 pixels. Other resolutions: 320 × 191 pixels | 5,372 × 3,205 pixels.
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Description: Exhibit in the Tekniska museet, Stockholm, Sweden. This work is old enough so that it is in the public domain. Photography was permitted in the museum without restriction.
Usage Terms: Public domain
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