Charles Xavier Thomas

Rarity: Common

The most frequent rarity: most Wikipedia articles become Commons.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Figure

Domain

Science and technology

Knowledge cost

2

Influence

3

Resistance

3

In collections

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What Wikipedia says

Charles Xavier Thomas de Colmar (May 5, 1785–March 12, 1870) was a French inventor and entrepreneur best known for designing, patenting, and manufacturing the first commercially successful mechanical calculator, known as the Arithmometer.

Excerpt from the Wikipedia article “Charles Xavier Thomas”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Benjamin Gavaudo, Public domain, via Wikimedia Commons.