Auto Meter Sport-Compact Mechanical Water Temperature Gauges when properly installed and located, can accurately measure the temperature of the coolant, so as to prevent serious internal problems, and help prevent over heating and or cold seizure. Bronze bourdon tube 270 degree sweep movements and durable nylon gearing have made these rugged and long lasting gauges a proven high performance favorite for over 25 years. These mechanical gauges require no electrical power for operation making them an ideal choice for vehicles with no or low powered electrical systems. If your looking for a hardcore instrument panel that will stand up to any brutal racing environment? Auto Meter Sport-Compact series is the right choice! Auto Meter Sport-Compact series is a hardcore instrument panel that will stand up to any brutal racing environment. Years of experience designing versatile gauges have made the Sport-Compact series the ultimate choice of racers worldwide.