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Date: 20 Sep 96 15:33:45 -0700
From: "JHEIMANN.US.ORACLE.COM" <JHEIMANN@us*.or*.co*>
To: techdiver@terra.net
Subject: SPG for deco bottles
George wrote: 
 
>I would not have a guage on deco except to tell if there is gas in the first 
>place for wreck diving as I do not lay my bottles down and want them as clean 
as  
>possible 
 
 The tiny Oceanic gauges are good for deco bottles (the ones that are about 
0.5" high and screw diectly into your HP port with no hose).  They come O2 
clean (if you care) and are calibrated in 1000 PSI increments, which is more 
than enough info for a deco bottle. 
 
For cave stage bottles, more accuracy is desirable, since you want to apply 
the rule of thirds.  In that case the best config is to use a real SPG with a 
short HP hose and bend it back on itself so that the gauge is next to the 
first stage, right in front of you when you look down at the stage bottle.  
You can tie it in place with a piece of cave line.  No gauge boot is needed.  
I believe you can see proper stage bottle rigging in the WKPP videos. WKPP has 
developed a really slick stage bottle rig, which I recommend studying 
carefully. 
 
John 
  
------------------------------------------------------------ 
John H. Heimann				Sr. Product Manager 
Oracle Corporation			Security Products 
500 Oracle Pkwy, Box 659410		415-506-9750 (phone) 
Redwood Shores, CA 94065		415-506-7226 (fax) 
			

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