How Pinwheel Calculators Work

A visual explanation of how pinwheel calculators work. Pinwheel calculators were invented in the 1870's and popular for almost 100 years. The specific details described in this video are for the Triumphator Model K, but the mechanisms are very similar in all pinwheel calculators.
I have been asked about how division can be performed on pinwheel calculators. A good explanation can be found on this web page:
www.vintagecalculators.com/htm...

[@YonatanZunger]

That was an excellent explanation and illustration!

[@kingzfan2000]

how on Earth does one invent something like this? this is truly baffling

[@musabbafridi8721]

Wonderful video, beautifully executed! And great explanations. Thank you very much!!

[@WumbologistPhD]

I want to make one of these one day!

[@mercedesmaennl2603]

Great video well explained ! I used to work with one of these in the 60ts.

[@christophe16700]

Excellent videos, with the Comptometer and the Pascaline.
Lot of work to !

[@MechanicalComputing]

Excellent question! The description of how to perform division is rather lengthy, so I have added a link to a web page with a good explanation of how to perform division in the video description above.

[@Jeffrey314159]

Yes, excellent video demonstration by simulation

[@MechanicalComputing]

The link I give in the description for this video explains how to do multiplication.

[@alfacru]

Could you explain how to make a division with that machine?
Thanks!

[@Mario962]

Hello, I have a calculator similar to this, but I do not know the multiplication operation. I would like to know the procedure for this operation.
Thank You, Mario

[@DrDinkle]

Cool, Thanks

[@basimpsn]

I get the feeling computers was much easier to make than this machine lol. The power of the brain, yet man still say there is no god?