-=> Quoting Lee Bell to Achim Lohse <=-
  ...
 LB> Ahem, I think you know the answer to this one.  The pressure reserved
 LB> by a J-valve won't even allow a normal safety stop.  It's old, old
 LB> technology meant for a time long gone.  What we know about
 LB> decompression sickness these days makes the air available through a
 LB> reserve worth very little in anything but an extreme emergency.
  Wait a minute. I'm not arguing that a good pressure gauge is not 
  desireable. And I'll get one as soon as I can.  But _any_ pressure 
  gauge can fail you. How many people do you know who have two 
  pressure gauges connected on a dive?
  Besides, shouldn't a J-valve that holds back 500 lbs. of pressure 
  allow you to make a safety stop?
  Achim
  Achim Lohse...Box2250, Invermere BC, V0A 1KO
  lohse@rockies.net/a.lohse@netcom.ca
  FAX: 604-342-0404
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