Addimult Sumax-E - Addiator Calculator slide adder

Up for auction is a very nice slide adder from Addimult. It is the Addimult Sumax-E that was used to add and subtract in the era before eletronic calculators. The adder is in excellent condition and measures about 3.5 by 5 inches. This is the mid-size of the three sizes that Addimult made. T are 9 digits and 8 columns for input. The adder comes with a leattte portfolio type case (it has the name ADDIMULT embossed on the front) that holds a full pad of the orignial paper and the original stylus (a mechanical pencil at one end and the stylus at the other.) The binding of the case is cracked and worn at both the top and bottom. You can learn more about the Addimult company at: If you have any questions or concerns or desire more detailed pictures please ask. Happy bidding.

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