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Title: Electric Comptometer by Felt and Tarrant, Chicago, USA with [Go to resource]
Description: Electric Comptometer by Felt and Tarrant, Chicago, USA with 12 digit sterling keyboard, model 992, serial no. 47627 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: adding)
calculating machine (full-keyboardTemporal: 1950-1965 Source: Science Museum Creator: Felt and Tarrant Manufacturing Company Identifier: 1988-812 Go to resource More Like this...
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