It is a standard item that professional racers have loved since long ago. Recently there are digital things, but I like analog gauges that can be used without worrying about running out of batteries. I lost the thing I was using for over 20 years and purchased the same thing. ! After purchasing I found an old tire gauge. The accuracy is not changed even when compared with new ones. You can use it with confidence. I use a floor pump with an air gauge, but after putting in air with a floor pump a little more, I try to adjust it to severe with this gauge. It is also good that it does not get in the tool box even though it is small.