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    Re: Mercury AH in aircraft sextants?
    From: Bill Morris
    Date: 2018 May 8, 15:17 -0700

    Tony, there are at least two good reasons for not having a mercury horizon in an aircraft:

    1) Vibrations would disturb the reflective surface and the mercury would be subject to the same accelerations as a bubble level;

    2) If spilled, the mercury would corrode metal components of the aircraft, quite speedily in the case of aluminium.

    Bill Morris

     Pukenui

    New Zealand

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