Navigator CompassNavigator Compass Features 4-1/2 PowerDamp Flat Card Dial with Large Numerals Brushed Stainless Housing Ideal for both Power and Sail Boats Fits all Popular Sailboat Steering Pedestals 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 Internal Gimbal Systems for Maximum Stability During Adverse Pitch and Roll Conditions Powerful DirectiveForce Magnets for Fast Heading Lock-on Movable Sun Shield 45 Degree Lubber Lines High Temperature Construction for Extended Operating Range Custom Fitted Protective Covers Available weather shield model no. WS-P Easily Installed, Fits 5.25 13.35 cm Mounting Hole 100% Repairable Exclusive 5-Year Ritchie WarrantyApprox. Shipping Weight 3lbs 10oz 1.65 kg Notes For Navigators built before 1986 please see the service manual page 6-12 or contact Ritchie for replacement lighting.12 volt lighting standard 24 32 volt lighting options are available.