This lensatic compass from CAMMENGA has been used as an alternative to the tritium version for decades. It is the same compass CAMMENGA has been supplying to the US Military except the self-luminous tritium has been replaced with phosphorescent paint. This compass features both a 0-6400 mils scale (20 mil resolution) and a 0-360 degree scale (5 degree resolution), with an accuracy of +/- 0002 mils. Other features of this most rugged and accurate compass are a sapphire jewel bearing, rotating bezel, a magnifying sighting optic, cast aluminum frame, olive drab LC-1 pouch with belt clip, induction dampening, and a climate capacity ranging from -50 to +150 degrees F. Same as National Stock Number: 6605-01-196-6971. Mil Spec: MIL-PRF-10436N, except luminosity of this compass is phosphorescent paint, not tritium.