Quote: (Originally Posted by
dive2dive2000)

Dave Weber has been a Prism diver and one of the very first customers. The plumbing, loop flow, scrubber, and loop volume, are a true mirror of the Prism but the head and electronics right down to the secondary are night and day.
As is the build quality and all of the design details. The build quality is confidence inspiring. The build quality of the "other rig" is merely humor inspiring. Don't get me started.....
I was an early adapter to the Mark-15, back in the late 70's. Does that mean that all of the rigs that I do design work for now are "Mark-15 copies" because I use all of my prior knowlage when working on a new rig? Most rigs are nothing but a repackaging of prior art with some new features tossed in for good measure.
Maybe we should all just say that "every rebreather is a copy of the Mark-15 except for the: (fill in the differences here)".
Dave