In this restoration video, you will see me restoring a mechanical calculator/arithmometer, Felix M.
The calculator is made of tin and many aluminum parts. It has over 400 pieces that needed some cleaning and care. It also had broken parts that I managed to remake and replace.
The machine was in an advanced stage of decay, not functional, stuck, and with broken parts. I've tried to give it another chance, and I think I have succeeded. Now, the mechanism seems functional, even though I'm not sure I know how to use it properly. I will do research on how to calculate stuff with it.
I found this object very interesting and challenging to restore. Based on Leibniz's technology, it could perform addition, subtraction, multiplication, and, with some more elaborate user involvement, division. It was trendy and sold for 90 years. In contrast to the modern calculator's credit card size, the Arithmometer was large enough to cover a desktop.
The restoration process took me almost a month due to the many pieces that needed to be restored/repaired and cleaned.

If you know how exactly I can use this machine, please let me know in the comments section.
I hope I have caught everything, but if you have any questions, you can comment, and I'll get back to you!
Cheers! Johnny.

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