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    Re: "no plotting sheet required" - an interesting find in an old book
    From: Mike Freeman
    Date: 2019 Dec 21, 09:46 -0800

    Thanks Tony,

    Have had good study of this and am pretty sure I understand it.

    Unless I am mistaken the "clever bit" is just the same as the Mary Blewitt method which is the subject of this thread, just used in a different way.

    Mike

       
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