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    Re: A noon fix inland with an peri-sextant
    From: David Pike
    Date: 2017 Dec 19, 15:43 -0800

    Did you try, or have you heard of, my trick for getting the exact time for the central line? Plot your sights on thin graph paper or even a transparency and then fold it in half, loosely at first. Hold it up to a light.


    That was the bit I couldn’t remember, and I couldn’t remember how long ago you posted that advice, so I didn’t attempt to look for it.  In fact, if I simply take the times where the graph crosses my horizontal axis and take the middle, I get mer-pass a minute later, which at 53N puts me 9nm further west.  So I still need a bit more practice.  DaveP

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