i got one from checkers thats the dial kind. Slime brand... its pretty acurate from what i can tell. I love the thing...
I'm sure the reason why HP TV said that is because those pressure gauges (shaped like a shinny, silver, pencil) are getting cheeper and cheeper... i got 2 of them (buy 1 get 1 free) and they were so cheep that i ended up tearing one apart to use as a tiny cheater bar to turn an alan wrench in a low-space location (valve covers.)
They just have a spring... and in the one that I tore apart, im sure that spring wasnt very reliable after a year or two of steady use... im also sure that it wasnt air-tight anymore.
I personally use one kind of like this:
<img src="
http://images.orgill.com/200x200/6176184.jpg">
when im not in my garage (gas station/race track/ etc.)
and one of these when Im in my garage
Craftsman:
<img src="
http://cn1.kaboodle.com/hi/img/2/0/0/1a/d/AAAAAsskQdAAAAAAABrYVg.jpg">
slime one that i got from checker: $5.99
craftsman one from sears (air compressor kind): $14.99
