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    Re: Bob Goethe's Mark 2 Navigators slide rule, test drive comparisons.
    From: Sean Johnston
    Date: 2019 Nov 21, 15:37 -0600
    Thanks Tony, but I really can’t take much credit. 
    They are just reworked drawings from books by:
    David Burch
    and
    George Mixter


    On Nov 20, 2019, at 10:16 AM, Tony Oz <NoReply_TonyOz@fer3.com> wrote:

    Dear Sean!

    The pictorial hints on your rule are SUPERB!!!

    Warm regards,
    Tony
    60°N 30°E

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