From: kludge@panix.com   
      
   Lawrence D'Oliveiro   wrote:   
   >I don't see why. Consider how your weather report gives readings for   
   >atmospheric pressure: if it were to be 'practical' by analogy with   
   >temperature, then the scale would have zero correspond to normal   
   >atmospheric pressure, while high-pressure systems would have positive   
   >numbers in their centres, and low-pressure ones negative numbers in   
   >theirs.   
      
   Normal atmospheric pressure is 1 bar absolute, or 1000mB. That's a nice even   
   number and is   
   very convenient.   
      
   What you propose is to measure in gauge pressure nominal rather than absolute   
   pressure,   
   which is fine too.   
   --scott   
      
      
   --   
   "C'est un Nagra. C'est suisse, et tres, tres precis."   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)