A military lensatic compass is a, durable,, and highly accurate magnetic instrument designed for land navigation, frequently used by the U.S. Army as the M1950 model. It features a folding metal cover with a sighting wire, a luminous dial that uses induction damping to stabilize the needle, and a magnifying lens to read bearings while aiming. It is built to be waterproof, sandproof, and functional in extreme temperatures, often utilizing tritium for low-light, self-powered illumination.