The Cammenga G.I. Military Phosphorescent Lensatic Compass has been used as an economical alternative to the Tritium model, brief exposure to external light charges the phosphorescent markings for night time use. It is equipped with a magnifying lens, sight wire, dial graduations in both degrees and mils to ensure accurate readings, copper induction dampening system slows the rotation of the magnet without the use of liquids. Built to last with an Aluminum frame and waterproof housing, includes carrying pouch, lanyard and belt clip. Phosphorescent is stamped on the back of the actual compass. Made in USA