Kayaker CompassKayaker Bulkhead Mount features: 2-3/4" Easy to Read DialAdjustable up to 45 degreesEasily Installed, Fits " ( cm) Mounting HoleBuilt-in Compensators to Easily Adjust for DeviationScientifically Matched Sapphire Jewel & Hardened Steel Pivot Dial MovementPowerful DirectiveForce Magnets for Fast Heading Lock-onHigh Temperature Composite Construction for Extended Operating Range100% RepairableExclusive 5-Year Ritchie Warranty