I have one for setting up regs but I'm lacking the propulsion aid to test it with,cheers...here's some more pics but I doubt they'll help...Hi
Get a spare on / off with bleed hole, ie CP on / off or Eclipse oops, etc.
Install a HP guage in one of the ports and a blanking plug in the next.
Stand back and admire your work...
Also can be used for testing inline regs though having an inline bleed set up helps as you can test consistent recharge, plus maybe an LP gauge for easier reading...
Ed