Watherproof compass for boats of 5 to 8 metres (17 to 26 ft). Installation: flushmount on horizontal surface : compact compass (fastening with screws). Interchangeable with any compass of equivalent size. Features: Card design guarantees accurate readings and safe navigation under all weather or daylight conditions. Highly stable conical card, 70 mm apparent diameter. Front reading : graduation every 5° and compact figures allow for easy reading. Lighting : Bulb is integrated in the bowl, thus speading the illumination evenly and preventing eye srain and fatigue at night. Durable materials : All parts fully UV-impervious. Scratch resistant dome.