Friden STW 10 Mechanical Calculator Demo

Yes, this 1956 Friden STW10 is the calculator machine on the desk of Katherine Johnson in the movie Hidden Figures. Let's try it out, it's way more impressive than in the movie (I suspect theirs didn't work fully). If you want a fun demo that's less of lecture, see the "dividing by zero" video instead:    • Divide by Zero on the Friden STW10 Me...  

Friden Calculator Playlist:    • Friden STW 10 Mechanical Calculator  

More about the Friden STW10 on my website:
https://www.curiousmarc.com/mechanica...

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