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    Re: Spotted a sextant
    From: Mark Coady
    Date: 2018 Aug 19, 14:14 -0700

    I still have one of those from long ago. Davis mk3 lives.  I would guess he is using it horizontally to find an angular relationship to a terrestrial target.  Course? Position? Range? Distance apart? Distance traveled? A mark 3 is so simple, I found it more accurate than the more sophisticated mark 15 & mark 25. Which seemed to suffer from repeatability issues based on friction and frame wobble. I still have a mark 3 in a hard shell flare case.

       
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