I'm so tired of having to use a separate accurate electronic tire pressure gauge to check tire pressure, then remove it to add air with a separate air hose chuck, then check pressure again and then add more or to vent. too much air and repeating it over and over again. After doing this every two weeks on a few vehicles, including my large truck/RV tires (with dual rear wheels), it became an arduous task of pacing back and forth and kneeling on each tire for minutes. So when I saw this beautiful Milton Digital Tire Pressure Gauge I knew it was just what I needed. Milton Tool has been around for a very long time and they make no trash. For me it was worth every penny! That speeds up the work. A connection to the tire valve stem, check the pressure gauge, press the inflation lever to fill, stop to measure the pressure, add more if necessary or press the button to release excess air pressure, done and on to the next tire. Very easy! Very comfortable and high quality tool, I recommend it to everyone!