NOTE: The 30-0301 comes with a black bezel and black oil pressure faceplate. You will need to purchase the optional 30-0301-ACC accessory kit to get the silver bezel, white oil pressure faceplate, black fuel pressure faceplate and white fuel pressure faceplate. Each faceplate is double sided with standard PSI on one side and metric BAR on the other. The calibration for standard or metric display is easily performed using the buttons on the face of the gauge.