Moroso         Show With details ::  Pro Series Tire Pressure Gauges Pro Series Tire Pressure Gauges by Moroso Premium high-quality instruments with brass internals and Bourdon Tube Pressure Element provide full-range accuracy to within 1/2% Extra-large 4" diameter face and knife-edge pointer eliminate human error Adjustable pointer can be calibrated Fiberglass-reinforcedthermoplastic housing withstands harsh racing environments. Part No. 89552 Pro Series Tire Pressure Gauge,0-15 psi. Major increments at 3 psi with minor increments at .1 psi 89562 Pro Series Tire Pressure Gauge, 0-60 psi. Major increments at 10 psi with minor increments at .5 psi