Overview:senior metal tire gauge, used in automobile tyre pressure test. The correct pressure detection can increase the safe driving, reducing tire wear & reduce oil consumption.tire cooling detection quantity, used when testing Tai Qi mouth hold tire valves, until the pointer to high pressure & read it.according to the pilot experience, combination road conditions & load pressure weight do relative correct pressure judgment. Safe driving in reserve Instructions: vehicle parked, be sure to paper-cover in cold car when measuring tire pressure, first check tire pressure meter reading whether in "0" position, if not, by the side of the tire gauge to reset button, take down the valve cover, mouth tire will tire pressure meter measure pressure on the mouth tires valve mouth vertical force pushing. Pressed into the speed requires fast, with will not lead to tire air in the leak, and press it hard living tire pressure meter at the same time, observe the pointer is stable. In a pointer stable rapidly after dial out tire pressure plan, readings, (can generally be immediate access to the stable tire pressure readings)according to the side of the door, & combining the tire pressure requirements of experience, determine the driver tire pressure whether requirements, If a tire pressure is exorbitant, the tire pressure plan can be used to put breath; If a tire pressure is too low, should immediately fill gas to safety, & remeasure tire pressure audit accurate tire pressure, will fat tire pressure valve mouth cleared, plan dosing back:inspected at least once a month tire pressure. Without skilled tire pressure measurement of before operation, can be measured a few times more to determine readings right!!! Specification: Dimensions: 128 X 60 X 38 mm Weight: