Tire pressure gauge is a kind of pneumatic tire pressure gauge, which is composed of meter head, piston, meter body, ruler, main spring, etc. There is only one pressure measuring port on the meter head.
There are different standard units for air pressure, generally there are 3 to 4 kinds. Just as the weight can be expressed in kilograms and kilograms, there are 3 to 4 types of indication units on the barometer, such as kg/cm2, bar, PSI and kpa. The conversion relationship between them is as follows: 1bar=1.02kg /cm2=102kpa=14.5PSI
Align the notch of the measuring end of the tire pressure gauge with the tire valve and press tightly. At this time, the pointer of the tire pressure gauge deflects, and its indicating value is the inflation pressure of the tire, or the benchmark bar of the tire barometer is pushed out under the action of air pressure, and the value displayed on the benchmark bar is the inflation pressure of the tire.
