It is time to get out the pressure canners and have the dial gauges tested for accuracy. Why is this important? Over time, as the canner lid is handled, bumped, or just used, the calibration of a ...

PSI stands for pounds per square inch, the unit of measurement for tire pressure. When you hear your mechanic say your right tire's at 30 PSI, it means that's how much air pressure it has.

It has an average rating of 7.4 out of 10. Read all the reviews here. This tyre placard recommends a minimum tyre pressure of 36psi for the Jeep Grand Cherokee. This is equal to 250kPa and 2.5bar.

here are five proper gauges to help you look after your tires. Most tire pressure gauges give you readings through a digital display or an analog dial. The digital option will be more expensive ...