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Old 23rd June 2012 | 15:42
  #20 (permalink)  
keith williams
 
Joined: Jan 2011
Posts: 660
Likes: 20
From: England
The problem with question 2 isn’t just related the mathematics.

The McGraw-Hill Dictionary of Scientific and Technical Terms (see the link below) gives the following definition:


http://www.answers.com/topic/compass-deviation

(navigation) The difference between the readings of a compass which is without mechanical defects and is held motionless in space, and the same instrument when it is installed in the same geographic position but is mounted on a ship or aircraft; deviation is a systematic error which is compensated by placing iron bars in places about the compass; residual deviation errors are calibrated and noted on a card so it can be used by the pilot or navigator.
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