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 F-50W is for marine use and is white with a white Direct-Read dial. This compass is easy to install on your marine vessel with the provided surface mount! It features 2-3/4" Direct-Read dial, flush mount, Hardened Steel Pivot Movement, Sapphire Jewel Movement, high temperature composite construction for extended operating range and internal green NiteVu illumination. This compass is 100% repairable and has a 5-year warranty.