HF-742 - Helmsman Helmsman Compass Features:3 3/4" PowerDamp Flat Dial Easily Installed Fits 4" (10.16 cm) 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 Adapter Rings Included. 6" (15.24) Retrofits Existing Mounting Hole for Model No. HF-72/73. 45 Degree Lubber Lines High Temperature Composite Construction for Extended Operating Range Custom Fitted Protective Covers Available 100% Repairable Exclusive 5-Year Ritchie WarrantyApprox. Shipping Weight: 2 lbs (907g)Protective Cover: H-741-CReplacement PartsLight Assembly: SH-0131XSPNotes: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. Product : RITCHIE HF-742 HELMSMAN COMPASS Manufacturer : RITCHIE COMPASS Manufacturer Part No : HF-742 UPC : 010342130006