Review on JACO BikePro Bike Tire Pressure Gauge - 60 PSI (MTB Series) with Presta and Schrader Air Chucks by Paul Tilden

This pressure gauge is easy to use and accurate. You don't have to screw the valve cartridge onto the stem, just push it in. The valve cartridge design makes it easy to make a good connection without releasing a lot of air. To switch between Presta and Schrader cartridges, unscrew one cartridge on the gauge and screw on the other. Just don't lose an unused cartridge. Straight Chuck - Presta, 90 Degree Chuck - Schrader. Once you get a pressure reading, the pressure gauge will continue to show that reading even after you disconnect it from the valve. To reset the reading, press the air release valve button. You can also use this button to release tire pressure if a pressure gauge is connected. The gauge has a very solid construction with heavy duty brass hardware and a soft rubber casing around the gauge body. As far as I can tell, the gauge is accurate. To test this, I took my car to a tire shop and inflated the tires to 35psi. When I checked with a JACO pressure gauge, it consistently read 35psi.