Mfr # MA-OC6. HF-743W - Helmsman. Helmsman Compass Features: 3-3/4" CombiDamp Dial, Easily Installed, Fits 4" 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, Custom Fitted Protective Covers Available, 100% Repairable, , Approx. Shipping Weight: 2lbs (907g), Notes: All magnetic compasses come standard with 12 volt lighting. 24 & 32 volt lighting options are available., For all Helmsman built before 1992 please see the service manual page 5-14 or contact Ritchie for replacement lighting., Some custom built OEM models may have different lighting. .
