de Colmar Arithmometer: How It Works/Mechanism Overview

Brief description and demo of how the de Colmar Arithmometer, the first calculator on the market, works. This version is the 1965 version, which is the most recognizable with a full counter register

[@brunopacifico4979]

Fantastic video! It's a very simple but fascinating machine. I'm fascinated with the content available in your channel.

[@bwhog]

The Leibniz wheel (aka stepped drum) is a really clever design. Great way to actuate a device like this!

[@abcstardust]

I like watching all your videos time and again. The wooden cabinet looks thin. What’s the actual depth?

[@abcstardust]

What are the 4 screws for that are above the counting shafts? They’re above the larger screws on the inner wall

[@abcstardust]

My guess is they are some sort of adjustment screws; they have holes directly opposite them on the front wall. What do you know about them?