Download LiteratureRitchie Compass HD-744 CompassHelmsman CompassHelmsman Compass Features 3-3/4" Flat Dial 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 Exclusive 5-Year Ritchie Warranty Approx. Shipping Weight: 2lbs (907g)Notes: Comes standard with 12V lighting. 24 & 32V lighting options are available. Some custom built OEM models may have different lighting.For all Helmsman built before 1992 please see the service manual page 5-14 or contact Ritchie for replacement lighting. Specifications:Lubber Lines = NONE Mounting Style = Deck Read = NONE Backlight = YesRITCHIE HD-744 HELMSMAN COMPASSNormalized SKU: HD744UPC Code: 010342138620Ritchie Compass HD-744 Literature Download Quick Reference Guide Owners Manual