Ritchie - F-50 Explorer Compass - Flush Mount - Black - F-50 Explorer Compass Features: 2-3/4" Easy to Read Direct Reading Dial Easily Installed, Fits 3.75" (9.53 cm) Mounting Hole Internal Green Night Illumination Built-in Compensators to Easily Adjust for Deviation Scientifically Matched Sapphire Jewel & Hardened Steel Pivot Dial Movement Powerful DirectiveForce Magnets for Fast-Heading Lock-on Movable Sun Shield High-Temperature Composite Construction for Extended Operating Range 100% Repairable Exclusive 5-Year Ritchie Warranty Approx. Shipping Weight: 1lb (454g) Notes: Comes standard with 12V lighting. 6 & 24V lighting options are available. Some custom built OEM models may have different lighting. Contact Ritchie for replacement lighting.