Ritchie Helmsman Compass - Flush Mount - White. The Nitevue system is a permanent internal light source that appears on the compass face when the helm is being used (the direction of North) and appears solid green when the helm is removed. This system virtually eliminates any question or need for recharging. Its flat 3-3/4" dial easily installed 4" mounting hole and scientifically matched sapphire jewel and hardened steel pivot and pivot axle ensure a precision declination. Compensators quickly correct heading errors. If heading is slightly off simply push the compensator button and make the correction. The HF-742W is a Ritchie exclusive with Ritchie 5-year Warranty and all Ritchie products are covered by a Limited Lifetime Warranty. Specifications for Ritchie HF-742W Helmsman Compass: Manufacturer: Ritchie Color: White Features of Ritchie HF-742W Helmsman Compass 3-3/4" PowerDamp Flat Dial Easily Installed Fits 4" (10.16cm) 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 100percent Repairable Exclusive 5-Year Ritchie Warranty Approx. Shipping Weight: 2lbs (907g) All magnetic compasses come standard with 12 volt lighting. 24 & 32 volt lighting options are available. 12 volt lighting standard - 24 & 32 volt lighting options are available. Package Contents: Ritchie HF-742W Helmsman Compass Ritchie HF-742W: HF-742W Helmsman Compass - Flush Mount - White