Contest 101 Bulkhead Mount Compasses Designed for powerboats and sailboats 26'-40' Can be mounted in bulkheads of any thickness, then read easily from both the cockpit and the cabin The double-gradated, 4" apparent card is illuminated for night viewing The watertight assembly includes a clinometer Requires 5 1/4″dia. cutout Card can be read clearly from up to 15' away Requires 5 1/4"dia. cutout The watertight assembly includes a clinometer All compass materials treated for UV protection Scratch-resistant dome Integrated night lighting for even illumination Front access to light bulb and optional compensation cell Compensation optional Supplied with protective cover and drilling template 5-year warranty