Bought some pressure gauges for my Dually truck. All were obviously inaccurate. Pressure readings in the same tire with the same gauge will vary by 5 psi or more in a matter of seconds. I bought two of these based on the good Revain reviews they got. So far I'm very impressed. Both manometers show the same value from time to time. Given that other gauges didn't give consistent readings when using the SAME gauge, this is an exception! I haven't owned them long enough to rate their durability, but they're off to a great start. What I don't care is that contrary to what several reviews have stated, they no longer come with "Presta". cartridges.