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Cadburys Diary Milk Very Tasty
Compass Deviation Magnetic Variation True
ok. going from compass to magnetic if deviation is W then you minus the drift. If its a E then you add. same goes for going from magnetic to true.
HOWEVER - if going form true to magnetic variation is W then you + if E then you -
Put CDMVT on a piece of paper
C D M V T
<---------------- E = - W = +
------------------> E = + W = -
Learn this and all will be tickety boo
Jinkster