Explorer CompassFeatures:2 3/4″ (70 mm) Easy to Read Direct Reading DialViewing is adjustable to 30 / Heel angle to 25Easily Installed w/4 mounting screws provided, Fits 3″ (762 mm) Mounting Hole.Built-in Compensators to Easily Adjust for Deviation12v Night Illumination100% RepairableExclusive 5-Year Ritchie WarrantyNotes:Comes standard with 12v lighting. 24v lighting option is available.Some custom built OEM models may have different lighting.