Distortion of history. Precise mesurements

Re-uploaded for posterity from the legendary Global Vision channel, formerly on YouTube.

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Date: 2018-11-03
URL: https://www.youtube.com/watch?v=M6hMPwcP680

Another part of history we have no idea about... how ancient clocks, watches, mechanical dogs and dolls and other devices were built. What precise instruments were used.
Thanks to this chanel for some videos i used for explanations
https://www.youtube.com/watch?v=1K_NQlmOwqM