The way I use is:
Cadburys Dairy Milk Very Tasty
Compass Deviation Magnetic Variation True heading
Variation East Magnetic Least
Variation West Magnetic Best
Deviation East Compass least
Deviation West Compass Best.
So say for example you have the following information:
Variation - 10w
True Heading would equal 042.
Magnetic Heading - 052
And lets say you know the deviation for your compass is 3E (can normally get this information from your compass deviation card or its apart of the information given to you) then you can apply the above to get the following:
Deviation 3E
Compass heading - 049
Last edited by wbryce; 24th Jun 2007 at 19:49.