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Friden Model STW-10 Electro-Mechanical Calculator
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Friden Model STW 10 Electro Mechanical calculator. I used to service these machines in the early 1960's. | Mechanical calculator, Calculator, Computer technology
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Electro-) mechanical calculators - technikum29
Friden Model STW-10 Electro-Mechanical Calculator
UvA Computermuseum
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