Pinpoint a distant feature of the terrain such as a hilltop, stream or road junction on the map.
Using a compass, measure the exact magnetic direction from where you are to the feature.
Convert the magnetic direction to a map north direction by subtracting the magnetic variation provided on the map (there should be a small diagram on the map that helps you accomplish this).
Calculate the reverse direction of the map north direction (180 degrees from map north).
Put the center point of a protractor on the exact map location that you sighted to with your compass.
Line up the 0-degree mark on the protractor with map north.
Make a mark on the map next to the protractor at the number of degrees of the reverse direction.
Remove the protractor and draw a long line with a straightedge and mechanical pencil from the pinpointed distant terrain feature through the mark you just made.
Double-check your calculations. You are located somewhere on this line.
Pinpoint a second distant feature and repeat steps 1 through 8. You are located where the two lines intersect.
Repeat the process with a third distant landmark to confirm your work, if possible.
Check your calculations if there is a large difference between the points of intersection.
