Charpentier G.
Contenu
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Nom
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Charpentier G.
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Couverture temporelle
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late 19th / early 20th century
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Biographie
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Perhaps a son or nephew of the G. Charpentier active in the mid- 19th century Charpentier manufactured a convenient pocket-size circular slide -rule, the 'Calculimètre' for which he obtained a patent in 1882. The instrument was listed in catalogues of the American rule-making company Keuffel & Esser from 1895 until 1927, as also in Dietzgen catalogues.1
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Notes biographiques
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1 Otnes 1991; Tesseract 91, N° 33.
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Identifiant
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1496
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ark:/18469/1svgj