The SE CC4580 Military Lensatic and Prismatic Sighting Survival Emergency Compass is the ultimate direction finder. PRODUCT FEATURES: -Thermo-elastic liquid-filled capsule with floating dial -Rotating bezel ring -Ruler units on the sides measuring inches and centimeters -Built-in bubble level -Folding thumb ring -Tripod screw hole on base -Adjustable diopter sighting lens -Sighting lines on cover -Conversion chart for angle, gradient and distance on ...