National Model 11EN Adding Machine

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Description: This full-keyboard printing electric adding machine has a gray metal frame and ten columns of green and white color-coded plastic keys. Behind the keyboard is a row of ten number dials. Right of the keyboard are square keys (and an addition bar) marked with a star (for totaling), an S (for subtotals), a subtraction sign, an addition sign, and a “#” (for non-add). The machine prints these symbols, except in the case of addition. Subtracted numbers are in red. There also is a repeat lever. Behind the keyboard and the dials to the left is a lever controlling the printing mechanism. This mechanism and the narrow paper tape, fixed carriage, and motor are at the back. There appear to be 11 keys in the printing mechanism.; The machine is marked on the front: National. It is marked on a metal tag at the base of the front: 11EN327988. It is marked on the back: MANUFACTURED AT (/) ITHACA, NEW YORK, U.S.A. BY THE (/) ALLEN-WALES ADDING MACHINE DIVISION OF (/) THE NATIONAL CASH REGISTER COMPANY (/) DAYTON, OHIO. U.S.A. (/) National. It is marked on a tag at the base of the back: NATIONAL SERIES E.; The stand for this machine is 1986.0397.02. Compare 1982.0794.79.; Reference:; American Office Machines Research Service, section 3.21, 1938, p. 4.
Location: Currently not on view

maker: Allen Wales Adding Machine Division, the National Cash Register Company

Physical Description: paper (overall material); plastic (overall material); metal (overall material); rubber (overall material)
Measurements: overall: 21 cm x 30 cm x 47 cm; 8 9/32 in x 11 13/16 in x 18 1/2 in; overall: 26 in x 26 in x 44 in; 66.04 cm x 66.04 cm x 111.76 cm

See more items in: Medicine and Science: Mathematics; Science & Mathematics; Adding Machines

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