
Originally Posted by
cnynrat
Here's a little trick to deal with magnetic declination if you don't have a compass with that adjustment capability. At home, before you leave for your trip, take a long straightedge and use it to draw a series of lines at the angle of magnetic declination directly on your maps. I like to draw them at a spacing about equal to the width of the base of my compass. You'll end up with a series of diagonal lines on the map that are at magnetic north for that quadrangle, which can be used to orient the map easily when using a compass without declination adjustment. A little old school and low tech perhaps, but I used this approach for many years before I got a compass with adjustable declination.