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“Wooden Box” comptometer

Felt & Tarrant Manufacturing Company1900

Heinz Nixdorf MuseumsForum

Heinz Nixdorf MuseumsForum
Paderborn, Germany

The comptometer was the first exclusively key-driven mechanical calculator.
The “wooden box” was a precursor to the full-keyboard adding machines built between 1886 and 1904.
According to its manufacturer’s promotional material, it was the world’s first adding machine with a practical application. Photo: Jan Braun, HNF

Details

  • Title: “Wooden Box” comptometer
  • Creator: Felt & Tarrant Manufacturing Company
  • Date: 1900
  • Location: Chicago, USA

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