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    Magnetic variation calculator
    From: Paul Hirose
    Date: 2005 Feb 20, 14:16 -0800

    At the U.S. National Geodetic Survey site I noticed they have a
    magnetic declination calculator in their online "geodetic tool kit".
    It's pretty interesting -- computes an estimate of your local
    declination (variation), inclination, and intensity from the IGRF
    worldwide magnetic model. Rates of change are given too.
    
    The location input page didn't render with my old Netscape browser,
    but was ok with Internet Explorer and Firefox.
    
    http://www.ngdc.noaa.gov/seg/geomag/magfield.shtml
    
    
    

       
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