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2. Turn
dial face of
compass so that north on
compass is parallel with north on
map.
3. Place your compass level in
palm of your hand and turn yourself until
needle in
compass aligns with
North marking on
face dial.
4. The big arrow on
base plate is now aligned with your bearing.
Declination Value and Bearings - A Trick to Make it Stick
If you walked 10 miles through
woods in Washington State, without factoring declination value in your bearings, you would finish over 3 miles off target. That’s too much!
To avoid confusion in finding bearings, keep
central principle in mind:
Make map bearing = magnetic bearing.
You will achieve this in
field by adjusting your bearings to compensate for magnetic declination. There are 2 ways to account for magnetic declination in finding your bearings: an adjustable compass and marking your non-adjustable compass.
The easiest way is with an adjustable compass. Simply turn
declination adjustment screw on
compass to
correct value and all readings are automatically converted to true north. If it’s available, it’s always best to have an adjustable compass on your walk.
The next best way to account for declination is to mark
declination value on your non-adjustable compass at
beginning of your journey.
That’s simple to do. For example, when
map indicates a declination value of 20° west, you will mark your compass dial at 340°. If
map indicates a declination value of 10° east, you will mark your compass at 10°. Make
mark with a permanent marker and erase later with rubbing alcohol.
Now when you take your bearings in
field, place your compass level in
palm of your hand and turn yourself until
needle in
compass aligns with
declination marking on
face dial. Then
big arrow on
base plate will point toward your bearing and automatically compensate for magnetic declination.

Outdoors Adventurer, Writer and Webmaster Will Robertson lives with his family in Little Rock, Arkansas.
Explore the best hiking vacations and gear on the planet at: http://www.hiking-vacations-and-gear.com