1. Orient the map using the compass.

2. Locate two or three known positions on the ground and mark them on the map.

3. Measure the magnetic azimuth to a known position; convert it to grid azimuth.

4. Change the grid azimuth to a back azimuth and draw a line on the map from the known position back toward your unknown position.

5. Repeat Steps 3 and 4 above for a second known position.

6. For a check on your accuracy, repeat Steps 3 and 4 above for a third known position.

7. The intersection of the lines is your location.

Using three lines, a triangle of error maybe formed. If the triangle is large, recheck your work.

STRAIGHTEDGE METHOD.- Study the following steps to locate the unknown position of the user by the straightedge method:

1. Orient the map on a flat surface by the inspection method.

2. Locate two or three known positions on the ground and mark them on the map.

3. Lay a straightedge on the map with the center of the straightedge at a known position as a pivot point. Rotate the straightedge until the known position on the map is aligned with the known position on the ground.

4. Draw a line along the straightedge away from the known position on the ground toward your position.

5. Repeat Step 3 above using a second known position; and as a check on your accuracy, repeat Step 3 above, using a third known position.

6. The intersection of the lines is your location.