Ritchie SS-2000W SuperSport Flush Mount Marine Compass - WhiteRitchie SuperSport Series compass is built for offshore race boat performance and precision navigation. Designed with Ritchie's PowerDamp Plus dial technology, it delivers stable, accurate readings in rough marine conditions. The high-visibility dial and internal stabilization system ensure fast, reliable heading information even in heavy pitch and roll.Key Features PowerDamp Plus dial technology reduces oscillation; High-visibility 4 1/2" blue dial with large white numerals; DirectiveForce magnets for quick lock-on; Internal gimbal system for stability in rough conditions; Built-in compensators for easy deviation adjustment; 45 lubber lines for improved readability; 12V green LED illumination (standard); 100% repairable design; Includes replacement mounting gasket; 5-year Ritchie warranty; Specifications Dial size: 4 1/2" (115 mm); Mounting hole: 4.75" (121 mm) to 5.125" (130 mm);