Ritchie V-537 Explorer Bulkhead CompassThis Ritchie Explorer compass easily fits a 3" mounting hole and is is installed with the provided mounting screws. The brite white lettering on blue combined with the 12V night illumination allows for a readable compass in all weather conditions. Built in compensators allow for easy deviation adjustments. The compass features adjustable viewing and heel angle.Features: 12V Night Illumination; Reapairable; Built in Compensators; Easy Installation; Adjustable Viewing; Direct Reading Dial;