Hank Rogers:   
      
   Calibration every 2-3 years might be enough for a gauge used by a consumer,   
   esp. if they invested $50 or more in the gauge.  I paid mid-$40s for the   
   aforementioned   
   Deluxe Longacre, and I'd like to have it checked new.  Would probably hold its   
   setting for 4 years the way I coddle my gauges! :D   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)