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Old 07-07-2002, 11:26 PM   #7
oilspot
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Default Re: Pressure in spare

Wade,

I wish I had a good answer.  

I have one that I "adjusted" using a known standard of my brother's.  Although I cannot guarantee its accuracy I use it for my trailer tires.  I originally purchase this one from Brookstone and it was about 8 psi off of the standard.  The Brookstone was about $20 and my brother threw his away after testing it.

I also purchased one from a racing supply catalog.  It came with a +/- 0.5 psi guarantee.  Although I have not tested it against any known standards yet...  

I bought the middle of the road model for $35.  The inexpensive one was ~$25, and the professional versions were >$100.   I'll try to find the web page link for the catalog and post it later today.

The better ones usually have a long hose (8&quot and rubber armor to protect the sensitive parts inside.  They are also nice because you can let out air in controlled bursts from the gage and monitor the pressure as you go.
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