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    Accuracy of Bygrave
    From: Gary LaPook
    Date: 2009 Jul 05, 22:49 -0700

    My experience with the accuracy of the models I made is that it is
    consistently within two minutes of arc and most often within one minute.
    This is consistent with what others have written about the instrument,
    including Bowditch, article 2121. So the error doesn't exceed 2 nautical
    miles, 2.3 sm.
    
    There are some rare special cases that require a slight change in
    procedure but when the special procedures are followed the accuracy of
    the computed altitude remains within 2 minutes of arc. See instructions at:
    
    http://www.fer3.com/arc/img/108719.revised%20form%206-18-09.pdf
    
    Regarding accuracy see the attached documents and:
    
    
    
    http://www.fer3.com/arc/img/106329.bygrave%20pages%20from%20naca-report-198.pdf
    
    
    http://fer3.com/arc/m2.aspx?i=107947&y=200904
    
    http://www.fer3.com/arc/img/106329.bygrave%20manual.pdf
    
    http://www.fer3.com/arc/img/106329.imgp5241.jpg
    
    gl
    
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