How to use tire pressure gauge?

Tire pressure gauge is a pneumatic tire pressure gauge, which consists of meter, piston, watch body, ruler, the main spring and so on. Tire pressure gauge header has only one pressure metering port.

Compress the end of the notch and the tire valve. At this time the tire pressure gauge pointer deflection, the indicator value is the inflation pressure of the tire. Or the barometer of the tire pressure gauge is pushed out under the action of the air pressure, then the value displayed on the benchmark bar is the inflation pressure of the tire.

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