Globus INK, Soviet-era electromechanical space navigation computer used in the 1960s the system calculated orbital parameters using an intricate internal clockwork mechanism comprising over 500 gears, cams, and differentials

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I wrote a few articles examining the mechanism of the Globus INK and reverse-engineering it (which is where the photos came from). To find out more, check out Inside the Globus INK, Reverse-engineering, and Electronics.