From: csr684@NOTyahoo.com   
      
   thekmanrocks@gmail.com wrote:   
   > Steve W.   
   >   
   > I guess more broadly:  mechanical/analog gauges more directly measure the   
   tire pressure, vs   
   > digital models, which probably use some algorithm to determine the pressure?   
   >   
   > Again, I've spent two months with more than one digital tire gauge, and   
   after experiencing   
   > both their good and bad sides, I'm actually longing for the simplicity of an   
   analog gauge again.   
   > I'm hoping the $40-something I'm paying for my yet-to-arrive Longacre Analog   
   'Deluxe' will   
   > show improvements in quality and particularly consistency of reading,   
   compared to the $10 or   
   > so I paid, 5 and 10 years ago, for Accu Gage's S60X dial-face model that was   
   my go-to for   
   > ten years until recently.   
      
   Most of the digital gauges use a version of a resistance pressure   
   transducer, like an oil pressure gauge sender. As the pressure changes   
   the resistance changes and gives you a reading.   
      
   The catch with an analog gauge is the tube flexes every time you use it   
   and over time it can weaken.   
      
   If they show a spec for the ASME B40.1 or ASME B40.7 standards it can   
   give you a better comparison.  Most of the better gauges out there run   
   in the B area, IE 2-3% error across the scale with the best readings in   
   the middle of the dial. You can get hyper accurate lab grade gauges, but   
   they are $$$$.   
      
      
   --   
   Steve W.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)