Navigator CompassNavigator Compass Features:4-1/2" Ritchie CombiDial and Built-in ClinometerEasily Installed, Fits 5.75" (14.61cm) Mounting HoleInternal Gimbal Systems for Maximum Stability During Adverse Pitch and Roll ConditionsScientifically Matched Sapphire Jewel and Hardened Steel Pivot Dial MovementFiberglass Reinforced Bowl45 degree Lubber LinesExclusive Built-in 12V Amber LED LightingBuilt-in Compensators to Easily Adjust for Deviation100% RepairableExclusive 5-Year Ritchie WarrantyApprox. Shipping Weight: 2 lbs 5 oz (1.05 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 & 32V lighting options are available.