A good choice for bulkhead mounting on fishing and cruising powerboats and sailboats 19'-23', the Mini Contest features a legible and steady 3-1/2" apparent direct-read (read from side) red card with 5° increments. The card stays horizontal regardless of the vessel’s heel angle. Features six lubberlines and a 45°-0°-45° clinometer. Mounts on bulkheads from vertical to inclined 5°. Includes cover and 12V night light. Requires 3.1" dia. cutout.