Friden Calculator Popular Q&A

Q: What is a friden mechanical calculator?
A: The calculator that was used to grind through the interpolation process to Read More »

Q: How much is a Friden calculator Model STW-10 worth now?
A: Good grief, is it still operating? How well I remember that one! Check out the oldcalculatormuseum link. It might give you an estimated value. http://www.oldcal... Read More »

Q: What value is there for a Friden SW 8 708120 calculator?
A: There's not much, TBH. Read More »

Friden Calculator Helpful Resources

Friden Model STW-10 Electro-Mechanical Calculator
Friden Model STW-10 Electro-Mechanical Calculator. Updated 11/28/1999. A machine identical to this has a special place in my personal history. Back in the ...

The Friden SRW - The Museum of HP Calculators
The Museum of HP Calculators. The Friden SRW. By the 1950's, four function motor driven mechanical calculators had become common on the desks of ...

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