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Addidator Supra
The addidator is a mechanical add/subtract calculator. It consists of sheet-metal sliders inside a metal envelope, manipulated by a stylus. It is housed on the left-hand side of a case, with a paper pad on the right-hand side. In the middle is a holder for the stylus. There is a double-sided sheet of instructions in German. There is a typed page of instructions in English.
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Object Details
| ID: | EQS0538 |
|---|---|
| Collection: | Testing, measuring and design instruments |
| Type: | Calculator |
| Display location: | Not on display |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Overall: 17 mm x 125 mm x 185 mm |
| Parts: | Addidator Supra |