The Faria Chesapeake SS 4 Gauge 6000 RPM Tachometer makes an ideal replacement part or upgrade to a boat. It s suitable for use with a gas engine Inboard boat. This Faria tachometer has a large easy-to-read face with black tally lines. Every five lines is a blue line to make it easier to read. The numbers are marked off in tens and are big and black so they can be seen easily. The outside has a silver finish that coordinates well with just about any colored boat. It s made of metal by U.S.A standards. The lighted dial makes it easier to see in the dark. When replacing this part be sure to check the part number.