Using a compass to sight a bearing to a distant target.
MN
Measures an angle between Magnetic North, your location, and the distant target.
N 20 340 40 60 320
80
300
E 100
280
W
120
260
140
240
160
220
S 200 Using a compass to get a bearing to a distant target. • Sight to the target with the compass. MN • Turn the ring to align the orienting arrow with the red end of the magnetic needle. • Read the bearing from the ring at the index line.
N 20 340 40 60 320
80
300
E 100
280
W
120
260
140
240
160
220
S 200 Sighting with a Mirrored Compass
• Hold the compass level with the mirror at about a 45° angle. • Use the sighting notch to align the compass with the target. • Looking into the mirror, turn the dial to align the orienting arrow with the north needle.
Sighting with a Mirrored Compass
40 300 20 60 280 320 N W 340 80 260
E 340 N 100 240
320 20
120 220
40
300
140 200
60
S 280
160
W
80
260 160
E
S
100
140
120 240 200 220
• Turn the dial to align the orienting arrow with the north arrow.
Needle Parallax Good Bad
Keep the needle parallel to the orienting arrow. Parallax Side View Needle Parallax View from Above View from Behind
Sighting with a Mirrored Compass 297°
300 280 320 300 280 320 W W 340 340 260
N 260 240
20
220
40
200
60
S
80
160
E
100
140 120
• Read the bearing from the index line
Each increment is 2°! Longer tics every 10°! Labeled every 20° 296° 212° 36°
36° 254° 255°! ? Circle in a Circle! to ! “Box the Needle”
Labeled every 10°! Longer tics every 5° ! Each increment is 1° 305°-306° 357°
357.5° Sighting with a! Lensatic Style Compass Labeled in ! Degrees and Mils! (6400 mils = 360°)! ! Degrees! Labeled every 20°! Tics every 5° ! ! Mils! Labeled every 200 mils! Long tics every 100 mils! Increment every 20 mils 1850 mils! 104° 550 mils! 31°
4640 mils! 261° 5750 mils! 323° Sighting with a! Direct Sighting Style Compass Lens Mirror
54LU Compass
Floating Compass Card Side View
2 30 0 240 250 26 5 0 60 70 80 Forward bearings in! !large type! Back bearings in! !small type! ! Labeled every 10°! Increases left-to-right! Longer tics every 5° ! Each increment is 1°
Forward bearing? Back bearing? 226° 46° Forward bearing? Back bearing? 275.5° 95.5° Forward bearings in! !black type! Back bearings in! !red type! ! Labeled every 10°! Increases right-to-left! Each increment is 1°
Forward bearing? Back bearing? 276° 96°