From: BobEngelhardt@comcast.net   
      
   An Amazon meter is described as having "Measuring Accuracy: 1.0 grade".   
   I found that there is a standard that defines the grades, but is there a   
   simple answer to what "1.0 grade" means in percentage?  (I know how   
   difficult it can be to extract simple answers from standards.)   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)