The Kuhrt calculator

The Kuhrt calculator has a unique mechanism using pinwheels with sideways shifting pins. It was made in Leipzig, Germany between 1924 and 1927, and is very rare. Only about 2500 machines were made.
For more information about this and other machines in my collection, please visit my website:
www.jaapsch.net/mechcalc/

[@stephenfreeborn]

What a great machine. It’s been on my list for a while. I didn’t realize it had such a short run. That mechanism is so unique it seems a shame to be subcategorized under pinwheel. The carriage shift is unique.

[@jaapsch2]

Yes, I was unsure whether to classify it as pinwheel, but I had already put the Numeria in that category too. I still might put them both in the Other Wheel mechanism category like the Hamann Manus and the Marchant XL. It's tricky.

[@zse8861]

A very interesting and beautiful calculator. I like the machines with the bell on the outside. Did you buy this through eBay? There was an auction in December that I didn't win...

[@jaapsch2]

Yes, I got it recently on eBay for 239 Euro plus postage. I think that is a very reasonable price for such a rare machine. I also got a Barrett 6 that will be appearing here in a month or so.