Originally Posted by DangerousDanR

I just recently purchased a JACO "FlowPro™ Digital Tire Inflator" along with their presta chuck. The gauge is certified to be +- 1% with a half PSI increment on the display. The combination was around $70, and so far I am pleased with them. Since I have two different compressors with the appropriate quick coupler on them it is a great way to go.

I do have a Hirame presta chuck and I prefer the JACO chuck. Reality is that both are pretty good.

BTW, it reads a couple of PSI above the TPMS on my car, and I believe the gauge, not the TPMS. But if the TPMS is reading low by 1 PSI and the gauge is reading high by .5 PSI with the .5PSI resolution of both systems they are within a believable range.