The most important criteria when selecting a compass are dial size and mounting style. Quality components aid accuracy, smooth response, stability and trouble-free operation. RITCHIE NAVIGATION's Helmsman CombiDial Compass HB-741 is for marine use and is black with a black dial. This compass is easy to install on your marine vessel with the provided bracket mount It includes a 3-3/4 CombiDamp dial and is easily installed. The Helmsman Bracket Mount CombiDial Compass features built-in green NiteVu night illumination, built-in compensators, scientifically matched sapphire jewel and hardened steel pivot dial movement, powerful Directive Force magnets, moveable sun shield, 45 degree lubber lines and high temperature composite construction. This compass is 100..