NDūR's Lensatic Compass is great for anyone's survival bag to help one if the situation arises where they are separated from their group, lost their way on the trail or find your self in a dire drastic survival situation.Features: Metal Case Liquid Filled Sighting Wire Luminous Sighting Dots Rear Sight w. Lens & Lighting Slot Graduated Straight edge Fixed Index Line Rotating Bezel Ring Scales: 1:25000 meter Weight: 3.39oz Dimensions: 3 x 2.1 x 1