I have a tire gauge that I really like, but I needed a new tire inflator to work with the new Porter Cable air compressor I just bought. This works great and is all-in-one so tire inflation is quick. It reads to 1/2 pound of air pressure, and if you have too much air in a tire it can be easy to bleed a little. Just press the button on the side and take another reading. It's easy to get the same air pressure around the entire circumference without spending 15 minutes on it.