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    Re: digital compass, etc
    From: Roger M. Derby
    Date: 2000 Sep 07, 10:39 AM

    If you live in the midwest, many of the country roads are laid out along 
    section lines -- true North, South, East, or West lines.  To determine the 
    correct compass reading, you will need to add the magnetic variation which 
    can be gotten by calling any small airport.  If the variation is "west," it 
    should be added to the road's  heading to get the correct compass reading.  
    If the variation is "east," then it must be subtracted.  For example, if you 
    drive along a road running north and the variation for your area is three 
    degrees east, then the compass should read 357�.
      ----- Original Message -----
      From  Stephen Ellis
      Sent: Thursday, September 07, 2000 2:57 PM
      Subject: [NAV-L] digital compass, etc
      Hi I am new here, and I was wondering if anyone here has experience using a 
    digital or analog compasses.  You see I just installed a digital compass in 
    my car; a Ford Escort station wagon.  The instructions say to calibrate the 
    compass, you have to press a button, then drive around in a circle twice, 
    stop, then do another 2 circles.  I did that and the readings seem accurate.
      The compass is so-called "V1000 Copilot"  How do I know the readings I 
    receive are exactly correct?  Of course I know generally which way I'm going 
    (NSEW)and as I turn my car the readout seems to turn accordingly (if I turn 5 
    degrees left the readout should show that)
       I realize this may not be the right list to post this question, but if you 
    could  refer me to another list or answer this question I would appreciate 
    it.  Thank you.

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