Addifix-9 hand calculator (number cruncher)

I recently rediscovered an old hand computer, which was in my desk drawer for ages: an Addifix-9.
Addifix-9 Hand CalculatorThe Addifix was sold in the 1960s by a no longer existing German mail-order company called Neckermann. (Well: actually the brand Neckermann still exists, but under a new owner.) A stylus is used to make additions on the one side, and subtractions to the other.

By the way: I really like the English name for this kind of tool: number cruncher… 🙂 (And no, it’s neither a slide rule nor an abacus, although similar.)

A video demonstrating the calculator is included in a newer post.


One thought on “Addifix-9 hand calculator (number cruncher)

  1. Pingback: Review: Addifix 9 Mechanical Number Cruncher and Pocket Calculator | Kai Christian Bader

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