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    Re: Northern Limits of Magnetic Compass Usefulness
    From: Tony Oz
    Date: 2019 Feb 6, 12:10 -0800

    Yes, Bob, here it is, I should have included it in the first message.

    The pin height (the height of the center of the shadow sharpener) must be equal to the length of the unit segment - show along the West-East line. The crosses are the LAT hour marks.

    Please comment.

    Warm regards,

    Tony

    60°N 30°E

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