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    Re: Traditional navigation by slide rule
    From: Francis Upchurch
    Date: 2016 Nov 8, 20:31 -0000

    Bob,

    I’ve found converting from degrees, minutes, seconds (as on my Fuller 3) to decimals a bit tedious, potentially dividing by 60, 3 times and having to make notes.(ie mistakes again!). So maybe a good idea, except the added visual clutter of yet more numbers. Difficult balance I think.

    Keep up the good work.

    I am getting calculator type accuracy now with my updated Fuller 3 and able to get lunars spot on using the Thompson formula which is easy and quick on a slide rule. I have tried this with my simple school boy 1960s Thornton 10” but the results are not accurate enough for me.(1-3 decimal places, longitude sometimes miles out,  Fuller 4-7, always close enough).

    Francis

       
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