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    Re: An OCR attempt of the "Table de Point Miniature" article.
    From: Robert Pearson
    Date: 2017 Mar 29, 21:03 -0700

    Tony, I found this in a copy of  H.O. Pub 9 (aka Bowditch), 1962 edition, page 532. This is from the same Chapter XXI that I referenced in a recent post. It contains a short discription and derivation of the formulas.

    Delta m = sin(d+L)sin1'

    Delta n = sin(d-L)sin1'

    I'm not sure the notation is the same as in the document you linked to. I read thru it quickly but my French is a bit rusty - it's been 50 years since I studied it.

    Robert Pearson

       
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