Keyboard of Mechanical Adding Machine Or Calculator
Keyboard of Mechanical Adding Machine Or Calculator Used For Bookkeeping and Accounting with Paper Tape Printer
Picture No
13466557
Media ID
45141511
Size
4508px x 5635px
(12.9MB)
Credit
Mary Evans/Classic Stock/H. Armstrong Roberts
Source
Photograph - Classic Stock - H. Armstrong Roberts
Date
1930s 1940s
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Accounting Adding Bookkeeping Calculations Calculator Crank Decimal Entry Innovation Keyboard Keys Mechanical Numeral Numerals Positional Precision Printer Specialized Tape
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