SuperSport CompassDeveloped for and tested on offshore race boats the SuperSport Series compasses feature the PowerDampA(R) Plus dial. This dial technology features the PowerDampA(R) dial skirt to prevent oscillation, larger DirectiveForce(TM) magnets for quick lock on and extra-large steel pivots and jewels for smooth fast action.Features4-1/2 PowerDamp Plus, High-Visibility Blue Dial with Extra Large White NumeralsEasily Installed, Fits 4.75 (12.06 cm) to 5.125 (13.02 cm) Mounting HoleBuilt-in Compensators to Easily Adjust for DeviationScientifically Matched Sapphire Jewel & Hardened Steel Pivot Dial MovementInternal Gimbal Systems for Maximum Stability During Adverse Pitch and Roll ConditionsPowerful DirectiveForce Magnets for Fast Heading Lock-onExclusive Built-in 12V Green NiteVu Night Illumination in Movable Sun Shields45 Degree Lubber LinesHigh Temperature Construction for Extended Operating RangeCustom Fitted Protective Covers100% RepairableExclusive 5-Year Ritchie WarrantyNotes:Comes standard with 12V lighting. 24 & 32 volt lighting options are available. Some custom built OEM models may have different lighting.