Kayaker Compass. Kayaker Bulkhead Mount features:. 2-3/4" Easy to Read Dial. Adjustable up to 45 degrees. Easily Installed, Fits 2.94" (7.46 cm) Mounting Hole. Built-in Compensators to Easily Adjust for Deviation. Scientifically Matched Sapphire Jewel & Hardened Steel Pivot Dial Movement. Powerful DirectiveForce Magnets for Fast Heading Lock-on. High Temperature Composite Construction for Extended Operating Range. 100% Repairable. Exclusive 5-Year Ritchie Warranty