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    Re: Bubble sextant intervention needed.
    From: Brad Morris
    Date: 2012 Oct 19, 11:56 -0400

    Agreed Geoffrey.  The navigator is urged to permit the sextant to reach thermal equilibrium prior to observations, but I never recall seeing advice urging the navigator to do that by leaving the device out in the sun!

    Best Regards
    Brad

    On Oct 19, 2012 11:51 AM, "Geoffrey Kolbe" <geoffreykolbe---.com> wrote:
    At 07:23 19/10/2012, you wrote:
    Geoffrey-

    Well I'm not, really - but I was always taught that you need to leave a
    sextant out to equilibrate with the outside temp before taking a sighting.

    With respect Paul, I don't think you were ever taught to leave a sextant out in the sun! The great danger of that is that the silver scale jumps out of the frame and renders the sextant instantly and totally useless. X;{

    Regards

    Geoffrey
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