Brunton Omnisight Sighting Compass OMNI-SIGHT compass offers the convenience of multiple precision instruments in one hand-held unit - - Take bearings in Degrees or MILS - - Obtain bearing by looking through the Compass lens - - Forward and reciprocal bearings in degrees - - 90° quadrants - - 6400 point MILS - - Aluminium housing for ruggedness and reliability. Internal rare-earth magnet guarantees accuracy and resists magnetic interference.