Ritchie Venture Bulkhead Compass SR2Ritchie Venture SR-2 compass is designed primarily for sailboats 16 ft. to 36 ft in length.Ritchie Venture Compass features a 3-3/4" CombiDial. Combi-Dials are a combination of direct-read and flat-card dial design, allowing the dial to be read from both above and directly in front. This maximizes visibility and allows for more mounting options. This compass features a bulkhead mount, which is often used on sailboats to reduce interference with lines and to save space. Blue LED night lighting; Vertical mounting angle through 40 degrees; Steady quick lock-on performance; Exclusive 5-Year Ritchie warranty; Protective front and back covers are included; Specifications: 3-3/4" CombiDial; 4-5/8" to 4-13/16" Mounting hole;