I find this style to be the most accurate:
But i agree with crxgsr, if its off by 1-2 PSI its not a big deal, as it will be evenly off by the same amount for each tire.
Hot: 2001 Estoril M Roadster
ZCP 19's, ZHP knob, JL 8W3
Cold: 2002 TiAg M3 6mt
ZCP 19's supersports, ZHP knob, UUC short shift GROM, OEM 18's w310's,
http://absolutehid.ca hid kit