<VV> Need tire pressure gage buying advice

[Wrsssatty at aol.com]

We all know the importance of maintaining proper tire pressure for any car  
but, especially for our Corvairs.  My long trusty favorite tire  pressure 
gage seems lately to be giving false readings so I'm contemplating  buying a 
new one.  Any advice or recommendations out there?  I liked  the old one not 
only because, until recently, it seemed to be spot-on accurate  but also 
because I like its flexible hose and the little button on the side that  
allowed me to let air out if I found the tire to be over-inflated.  
 
What about this one from Griot's Garage?
 
_http://www.griotsgarage.com/product/digital+tire+inflating+gun.do?sortby=ou
rPicks_ 
(http://www.griotsgarage.com/product/digital+tire+inflating+gun.do?sortby=ourPicks) 
 
And, lastly, could it be possible that I am getting false readings on my  
old gage because I keep it in the car and it's been temporarily affected by 
the  cold temperatures outdoors?  BTW, my old one is analog with a round gage 
 and a sweep needle.  The false readings I have been getting from it have  
resulted in my over-inflating the tires.  In other words, it's telling me I  
have less pressure in there than I really do.
 
Thanks!
 
~Bill Stanley