The Rothco Lensatic Metal Compass is a magnetic azimuth navigation instrument used by dismounted operators to determine precise bearings and maintain directional travel in GPS-denied, GPS-degraded, or emission-controlled field environments.

The compass provides reliable magnetic north orientation without requiring any external power source, making it a deployable navigation capability across extended field operations, search and rescue missions, and emergency preparedness scenarios. Its aluminum housing protects internal components from impact, moisture, and debris, and its liquid-dampened floating dial settles on north within seconds of being held level. The floating dial is marked in both degrees on the outer ring and mils on the inner ring, giving operators dual-scale readiness for varied operational contexts.

Sighting capability is delivered through the compass-to-cheek method, which uses the rear sight peep slot, vertical sighting wire, and magnifying viewer in combination to acquire a precise bearing on a distant landmark. Once a bearing is acquired, the bezel ring, which clicks at approximately three degrees per click, is rotated until the luminous marching line is set directly over the north-seeking arrow, caging the azimuth for movement. This protocol allows an operator to maintain a directed line of travel at waist or chest level without repeatedly re-acquiring the sight picture.

Accurate deployment requires awareness of critical limits. The compass reads magnetic north, not true or grid north, so local declination must be applied when plotting on a map. Magnetic interference from vehicles requires a minimum 18-meter separation, and high-tension power lines require 55 meters. The compass must be held perfectly level during all readings, as tilt causes the dial to bind and produce false azimuths.