The Cammenga 27 Phosphorescent Compass is built to meet precise specifications so that you do not get yourself lost. It has been battle tested to stand up against water sand and shock. It even stays functional in temperatures ranging from -50 F to 150 F. This compass is available from Cammenga and for decades it has been as a viable alternative to the tritium model. The U.S. military has been using this compass for years. The only difference is that phosphorescent paint has replaced the self-luminous tritium. This way you can be confident you are only getting the best.The Cammenga 27 phosphorescent compass is equipped with dial graduations magnifying lens sight wire in both degrees and mils to ensure the most accurate readings possible. The rotation of the magnet is slowed down with the help of the Copper induction damping system and it does this without the use of liquids. It is built to last with waterproof housing and an aluminum frame. Numerous fighting forces depend on this compass to provide accurate readings which is why government agencies and adventurous outdoor enthusiasts around the world use it.