Product details:
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 vessels 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. Black bezel.