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Thread: Torsion pendulum clock - photo

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  1. Apr 27, 2020, 01:24 PM #2
    mklotz
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    It's an ATMOS clock...

    https://en.wikipedia.org/wiki/Atmos_clock

    and derives its power from the atmospheric pressure variations acting on the large bellows-like assembly visible behind the movement. No battery or winding required.
    ---
    Regards, Marv

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  2. The Following 3 Users Say Thank You to mklotz For This Useful Post:

    Jon (Apr 27, 2020), Scotsman Hosie (May 22, 2020), Tonyg (Apr 28, 2020)
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