A stylish surface mount boat compass with a compact, low profile design and a 2 3/4" (70mm) easy to read direct reading dial. All colours have internal green night illumination and built-in compensators which easily adjust for deviation. In addition, powerful DirectiveForce magnets offer fast heading lock-on. Internal 12V green night illumination Built-in compensators to easily adjust for deviation Scientifically matched sapphire jewel & hardened steel pivot dial movement Powerful Directiveforce magnets for fast heading lock-on Movable sun shield High temperature composite construction for extended operating range 100% repairable Exclusive 5-Year Ritchie warranty 2.75" Easy to read direct reading dial Compact low-profile design Quick push-button removal of compass module for storage and security