Ritchie Venture Bulkhead Compass Ritchie Venture SR-2 compass is designed primarily for sailboats 16 ft. to 36 ft in length. Ritchie Venture Compass features a 3-34 CombiDial. Combi-Dials are a combination of direct-read and flat-card dial designes, 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