Not sure if I just have a bad gauge or the fact that Stans valves have those flats on the threads so you can remove the inserts. Either way there's a lot of leakage with this gauge. I am also concerned it reads low - or my floor pump gauge reads high. 35 on pump shows 27 on gauge (CX bike) and 75 on pump shows as 64 on gauge.

Seems like all the digital gauges have their issues. I want something for cyclocross showing 20-40psi accurately.