Uploaded February 2016 | Updated September 2026, 2 weeks ago

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A mechanical calculator, which is capable to add and substract, featured carry mechanism, keyboard, overflow mechanism and openable part for set up.

Picture and building instructions : 📲 http://www.nico71.fr/mechanical-calculator-2/

See the other parts to understand more the functionning :
youtube.com/watch?v=VHQRJFD_yYQ
youtube.com/watch?v=kTcl0xOdbqs
youtube.com/watch?v=EdQMKcs5TdM

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🎁 My creations for sale (Parts+Instructions) :
-Genuine LEGO Bricks : buildamoc.com/collections/nico71
-Alternative Bricks : lesdiy.com/collections/Nico71/?ref=nico71
📷 Instagram : instagram.com/nico71_technic_creations
👍 Facebook : facebook.com/Nico71Creations
📕 Review and building instructions : https://www.nico71.fr/