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Description: | CURTA OPEN (Maker's trade mark and direction to open the lid of the case indicated by an arrow). CURTA Type II No. 529351 Made in Liechtenstein (Customs Union with Switzerland) by Contina Ltd Mauren System Curt Herzstark (stencilled on the side and base of the instrument). MANU Contina Ltd Mid January 1961 Mauren, Liechtenstein. DES HERZSTARK,Curt . circa 1945 Buchenwald Concentration Camp, near Weimar, Germany. DES after LEIBNIZ,Gottfried,Wilhelm. 1671 Mainz, Germany. This is a four rules Curta type II, lever setting, pinwheel, pocket calculator with an 11 digit input register, an 8 digit revolutions register and a 15 digit accumulator register. It is a very highly evolved form of Leibniz's design of (1671) which used iterative addition to achieve multiplication using the "stepped reckoner" device.with toothed wheels. Leibniz's calculator was improved by many other makers the most important being; Thomas de Colmar in 1818 and Willgodt T. Odhner of St Petersburg in 1874 . | License: | http://www.hmag.gla.ac.uk/spirit/rights/ | Publisher: | Hunterian Museum and Art Gallery, University of Glasgow | Rights holder: | Hunterian Museum and Art Gallery, University of Glasgow | Subjects: | SCIENTIFIC COLLECTION : | Source: | Hunterian Museum | Creator: | Hunterian Museum and Art Gallery, University of Glasgow | Identifier: | http://www.huntsearch.gla.ac.uk/cgi-bin/... | Language: | en-GB | Go to resource |
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