The original mirror-sighting compass is used by defence forces all over the world. It has Romer scales with plotting holes for finding and marking GPS co-ordinates, and rubber feet so it will not slide on the map. For reading in the dark, a luminous compund activated by daylight, flashlight etc., will give light up to 8 hours. The compass has 360 degrees on the graduation ring and 6400 miles on the reverse side.