The Racetech oil temperature gauge is a reliable and accurate 52mm diameter mechanical gauge with a black dial face displaying a scale of 40-140 degrees C.This gauge comes complete with a temperature capillary tube in options of 7, 9 or 12 ft lengths with a 3/8" BSP female fitting with a 3/8" to 3/8" male to male adaptor.Additional adaptors can be supplied to convert the threads over to suit nearly all applications.