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    Re: The Nautical Mile and the arc minute
    From: Francis Upchurch
    Date: 2015 Jun 5, 14:19 -0700

    Thanks Frank,

    Wonderful exposition of what we are all about.

    re the issue of old time (e.g.time sights) versus Sumner/St. Hilaire ,am I correct in thinking that you need accurate latitude to get good longitude by the old methods and that is not the case for the new methods, and hence their appartent superiority? Correct me if I have this wrong.

    Francis

       
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