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    Re: The mathematics of tacking downwind
    From: Hewitt Schlereth
    Date: 2016 Jul 29, 10:09 -0700
    Bob, as an old slip-stick guy, I'm following along with keen interest. You can bet many others are too. I'll surely want to have one of your finished rules.


    On Jul 29, 2016, at 9:08 AM, Bob Goethe <NoReply_Goethe@fer3.com> wrote:

    >I like the scales on your sliderule. Your tan scales ...make it very convienent to use the Bygrave procedure which produces more accurate results with a slide rule than the sine-cosine procedure.<<

    Thanks for your affirmation on this, Gary.  It was your encouragement & help with Bygrave  - along with the contributions of others on this list - that convinced me that if one is going to do sight reduction with a stick-style slide rule , then the Bygrave equations were the most suitable ones to use.  Having come to that conclusion, I attempted to optimize the rule's design for those equations.


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