b. When using the straightedge method—
(1) Orient the map on a flat surface by the terrain
association method. (Page 6-12, Figure 6-19)
(2) Locate at least two known distant locations or
prominent features on the ground and mark them on the
map.
(3) Lay a straightedge on the map using 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 3 and 4 using a second known position.
(6) The intersection of the lines on the map is your
location. Determine the grid coordinates to the desired
accuracy.