This site reviews the best tire pressure gauges on the market. There are many types of tire pressure gauges: there is a divide between digital and analog gauges , and some even come with inflators. While digit gauges are more precise than analog, that require batteries to operate them and sometimes the batteries will wear down. Also, if they are not properly calibrated, there could produce a misreading. Analog gauges give a good reading as well, albeit not as accurate as a digital gauge. They also last a lot longer than digital gauges and do not require batteries. Some gauges will come with an attached inflator so you can pump air into your tires with a flick of a switch. With so many choices it to hard to pick the best one. Luckily this site narrows your choices down to only the best on the market.