This small tyrepressure gauge will enable you to quickly monitor the tyrepressure on your car without the need of driving to some local gas station or dealer to have it checked up. Besides, using your own gauge all the time will guarantee you that the chosen pressure is the same wherever you are. (gauges at gas stations are not always very trustworthy.)

You can switch this tyrepressure gauge from psi to bar instantly (you can even convert a reading by just pressing the button. It has an auto switch off button, so it's batteries will last very long.