Review on Accurate and Convenient Tru-Flate (17-555) Truck Tire Gauge - 10-160 PSI Dial for Reliable Pressure Monitoring by John Contreras

Pretty accurate after checking with my digital manometer. At around 4 psi it's a little different. Assuming my digital sensor is properly calibrated. The reason I bought this gauge with a digital one was so I could press the button on the stem to vent for beach riding. And in the fishing season I do that a lot! I didn't want to risk damaging the valves when bleeding by simply using a digital pressure gauge molded into the valve. Works great for this task. If you need an accurate reading, there are better sensors. However, IMO and for my needs, 4psi doesn't make much of a difference to me. Especially if you have a spare pressure gauge.