Figure 2 from Stephen Johnston, ‘Making the arithmometer count’, Bulletin of the Scientific Instrument Society, 52 (1997), 12-21. For the full text, see the main page; for the other online images, see the gallery.
Larger version of figure 2.

Figure 2

A view of the arithmometer in 1862. From Franz Reuleaux, Die Thomas’sche Rechenmaschine (Freiberg, 1862). This pamphlet was extracted from Reuleaux’s article in Der Civilingenieur, 8 (1862).

Source: Museum of the History of Science, University of Oxford

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