Burroughs Calculator

This full-keyboard electric adding machine has a gray-brown metal frame and nine columns of color-coded gray and tan plastic keys. The two rightmost columns are tan, the next three columns gray, the next column tan, the next two columns gray, and the final column, tan. One key in the second column from the right is gray rather than white. Complementary digits are indicated. Keys for odd digits are concave, while those for even ones are flat. The key stems underneath the keys have a small round hole. At the base of each column of keys is a smaller key. To the right of the number keys are rear, front, addition, and subtraction keys, and another small key.

In front and in back of the keys is a row of ten number dials. The dials at the front are for individual totals, those in the back for grand totals. Pushing the addition or subtraction key adds or subtracts the amount shown in the lower dial from the total. There is no printing mechanism and no paper tape. An electric cord extends from the back of the machine.

The machine is marked on the front: Burroughs. It is marked on the bottom at the front with the following serial number: B166508. It is marked on the back: Burroughs Calculator.

This machine appears to be a more recent, electric form of the Burroughs calculator.

Reference:

Burroughs Adding Machine Company, Burroughs Electric Duplex Calculator, 1945 , Smithsonian Institution Libraries trade literature.

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