can be used by expeditions, mountain guides,navigators
HOW TO UE IT in 3 steps
STEP 1 : run the app and Place the phone on the map with the edge of your phone along the desired line of travel. Make sure your phone direction points towards your destination (not reverse).
STEP 2 : Rotate the compass housing until N on the dial points North on the map. Check that the compass housing green arrow is parallel with the map’s meridians.
STEP 3 : Hold the phone app compass in your hand and turn your body until the red end of the compass needle (North) coincides with the green arrow of the compass.
keep the red end of the compass needle collinear with the green arrow , now flolow the direction of your phone; will lead you towards your destination.