Check the listing for details. Ritchie HF-743W Helmsman Compass - Flush Mount - White. Condition: New. Listed at 269.26 USD. HF-743W - Helmsman Features: 3 3/4″ (95 mm) Open Face Dial or CombiDial Easily Installed, Fits 4″ (102 mm) Mounting Hole 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 Powerful DirectiveForce Magnets for Fast Heading Lock-on Movable Sun Shield 45 Degree Lubber Lines High Temperature Composite Construction for Extended Operating Range Adapter Rings Available. Sold separately. 6″ (153 mm) 100% Repairable Exclusive 5-Year Ritchie Warranty Approx. Shipping Weight: 2lbs (907g) Notes: All magnetic compasses come standard with 12v lighting. 24 & 32v lighting options are available. Some custom built OEM models may have different lighting.