BN-202 Navigator Navigator Compass Features: 4 1/2" Ritchie CombiDial and Built-in Clinometer Internal Gimbal Systems for Maximum Stability During Adverse Pitch and Roll Conditions Scientifically Matched Sapphire Jewel and Hardened Steel Pivot Dial Movement Built-in Compensators to Easily Adjust for Deviation 45 degree Lubber Lines Exclusive Built-in Dual 12 Volt NiteVu Lighting Fiberglass Reinforced Bowl Easily Installed, Fits 5.75" (14.61 cm) Mounting Hole. Click here to view a template of the mounting hole (NOTE: Be sure you print the template actual size). 100% Repairable Exclusive 5-Year Ritchie Warranty Approx. Shipping Weight: 2 lbs 5 oz (1.05 kg) Protective Cover: BN-C Replacement Parts Light Assembly: Upper: NV-0045XSP; Lower: NV-0044XSP 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.