im paranoid about pressures also. i use an air gauge with a round easy to read face. it also remembers the last reading. i got it from auto zone for about 12 bucks. it also has a short stem which makes it easy to press into the stem.
The primary reason I chose the one from Radio Shack is because it has backlit display,
though I believe that you can find other Accutire models that also have backlit display.
Note that this is the first tire pressure gauge I've used, so I cannot compare it against other
models, but so far I am happy with it. Note that the accuracy of those two models (and other
similar models in same price range) is approx. 0.5psi +- 1%, but this should be sufficient for
FYI, I am glad that I got the tire gauge, because I found that all my 4 tires on my 1 week
old Prius were under-inflated to 30psi. Fortunately, I have Coleman Powermate jumpstart
system with compressor (model PMJ 8161, approx. $60 on sale from PepBoys few months
ago), so this is another tool I'd recommend.