Official U.S. Military Tritium Lensatic Compass (Model 3H) is the official U.S. military compass. 

Specifically built for demanding conditions with an aluminum frame and a waterproof housing, it has undergone rigorous testing and is shock, water, and sand proof, and is still functional from -50 to 150 degrees Fahrenheit.  It is equipped with a magnifying lens, sight wire, and dial graduations in both degrees and mils to assure accurate readings.  It also has a Copper Induction Dampening System that slows down the rotation of the magnet without the use of liquids.  Maintenance-free seven tritium micro lights allow for navigation in the dark.  

Official U.S. Military Tritium Lensatic Compass (Model 3H) comes with a carrying pouch, lanyard, and belt clip.

Specifications

• Luminosity: Tritium
• Jewel Bearing: Sapphire
• Rotating Bezel: Bi-Directional
• Climate Capacity: -50 F to +150 F
• Frame Materials: Cast Aluminum
• Waterproof: Yes
• Expected Luminous Life: 10 Years
• Accuracy: +/- 0002 mils
• Dial Readings: Degrees & mils
• Casting: Aluminum
• Damping Process: Induction
• Carrying Pouch: LC-1 w/Belt Clip
• Lanyard: Included
• Colors (Body): Olive Drab
• Country of Origin: USA