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Description: | Olivetti (Makers trademark on the front of the machine). Summa PRIMA 20 olivetti Made in Italy, fabrique en Italie (makers trade plate and model on the back of the calculator). 5514168 (serial number on bed plate of the mechanism viewed through a slot in the dust plate on the underside of the machine). CHRYSTAL & HILL LTD 22A WEST NILE STREET GLASGOW C.1. TYPEWRITER SALES & SERVICE OFFICE EQUIPMENT 041-221-3081 (printed on the distributers trade label attached to the back of the machine) MANU Olivetti circa 1968 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 Prima 20 sterlina (Sterling) or Model 71 is a two rules pinwheel type repeat addition mechanical calculator with an 9 digit keyboard. There is no revolutions register and 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 has extra keys for 10, 11 and 1/2 pence and the printout also had an extra 2 digits making 11 plus the half pence. The decimal simplex version had a nine digit keyboard and 11 digit printout. | 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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