The most important criteria when selecting a compass are dial size and mounting style. Quality components aid accuracy smooth response stability and trouble-free operation. RITCHIE NAVIGATION s Explorer Compass S-53G has a 2-3/4 Direct Read dial and 12 V green NiteVu illumination. It has built-in compensators and a 5-year warranty. You can get the protective cover E-50-C from RITCHIE NAVIGATION to protect your Explorer Compass. The Explorer Compass S53-G is available in black Gray and white.