CombiDial Bracket Mount. 3-3/4″ Dial. Designed for power or sailboats 25′ to 35′. Exclusive built-in green NiteVu night illumination. Built-in compensators to easily adjust for deviation. Scientifically matched sapphire jewel and hardened steel pivot dial movement. Powerful DirectiveForce magnets for fast heading lock-on. Movable sun shield. 45 Degree lubber lines. High temperature composite construction for extended operating range. Custom fitted protective covers available. 100% repairability. Exclusive 5-year Ritchie warranty.