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    Re: Poor St. Hilaire
    From: Frank Reed
    Date: 2007 Oct 27, 21:48 -0400

    Gary, you wrote:
    "Today, with programmable calculators, it is trivial to go back to
    Sumner's method and plot the LOP after determining two points using
    the "time sight" computation."
    Right. And one advantage of the Sumner approach compared to the St. Hilaire
    intercept approach is that you can use any old graph paper, including graph
    paper drawn up on the spot. With a Sumner line, it doesn't matter if you
    have the correct local scale for minutes of longitude. Sumner himself erred
    by suggesting that his lines should be drawn on a Mercator projection, and I
    suspect it slowed the adoption of the method.
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