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Vintage Dalton Adding / Calculating Machine / Retro 1920s 10 Key Calculator

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Dalton Ten Key Adding / Calculating Machine.

"This model was introduced in 1902 and sold through 1928. It was the most successful and best known adding machine of its time. It was rugged, all metal and weighed 30 pounds, but its upright design conserved desk space.

This model featured a "Multiplication" key which simply left the input number uncleared after addition so it could be added again. It also had non print, non add, correction (clear the entire input number) and backspace keys and a window indicated how many digits (but not the digits themselves) had been entered".

Calculators have come a long way in 80 some odd years.
This adding machine would look great in any office, and is a great conversation piece.

This adding machine works. It needs a new ink ribbon. Obviously new ribbons would be next to impossible to find. There is a solution though. All you have to do is buy a new ribbon the same width as the original, and re-roll the old spools with the new ribbon.

Due to the 30LB weight of this item, shipping will be a bit more than usual. This item will ship fully insured.

More pictures are available upon request.

Ronnie Mozingo

Vintage Dalton Adding / Calculating Machine / Retro 1920s 10 Key Calculator


  • Material: metal
  • Only ships to United States from California, United States.
  • Feedback: 405 reviews
  • Favorited by: 9 people