Helmsman CompassFeatures:3 3/4″ (95 mm) Open Face Dial or CombiDialEasily Installed, Fits 4″ (102 mm) Mounting HoleExclusive Built-in Green NiteVu Night IlluminationBuilt-in Compensators to Easily Adjust for DeviationScientifically Matched Sapphire Jewel and Hardened Steel Pivot Dial MovementPowerful DirectiveForce Magnets for Fast Heading Lock-onMovable Sun Shield45 Degree Lubber LinesHigh Temperature Composite Construction for Extended Operating Range100% RepairableExclusive 5-Year Ritchie WarrantyApprox. Shipping Weight:2lbs (907g)Notes:Comes standard with 12v lighting. 24 & 32v lighting options are available. Some custom built OEM models may have different lighting.