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Description: | Olivetti (Makers trademark on the front of the machine). Summa 15 MADE IN ITALY - FABRIQUE EN ITALIE (makers trade plate and model on the back of the calculator). S538805/ST (serial number on bed plate of the mechanism on the underside of the machine). MANU Olivetti circa 1955 Ivrea, Italy. DES after LEIBNIZ,Gottfried,Wilhelm. 1671 Mainz, Germany. DES after THOMAS de Colmar, Charles,Xavier,Chevalier. 1818 44 rue Chateaudun, Parios, France. DES after ODHNER,Willgot,Theophil. 1874 St Petersburg, Russia. This Olivetti Summa model 15 is a, two rules pinwheel type repeat addition calculator with a full 10 digit keyboard input and no revolution register It is a print only machine so has no accumulator register. This money totalling machine of the comptometer or adder type was specifically built for the British market it had extra keys for 10 and 11 pence and the printout had an extra 2 digits making 12. The decimal version had a nine digit keyboard and 10 digit output | 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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