With LCD display, the most practical tire pressure gauge. RCC-141A:four display units: PSI,KPA,BAR,KG/CM² ... . If the tire pressure is insufficient: the car does not light, feel the waste oil, feel sluggish; if too high tire ... the tire. 2 , take out ready tire pressure gauge . 3 , take tire pressure gauge head right, at the hole, pressing 4 , The ...