Regulator Servicing & Flow Meters

So i built a regulator servicing panel.  Bent the metal to form the panel and got it powder coated.  Mounted a couple of inter-stage pressure gauges as I had them laying around doing nothing.  BCD quick disconnects are mounted on the base of the panel for attachment to regs.  The silicone hose is filled with coloured water to act as a manometer, and the deflection in inches of water measures the amount of 'cracking' pressure required before the 2nd stage flows.  Every manufacturer of regulator has a recommended cracking pressure if you check their servicing manuals.  I made an adapter out of tubing and garden hose nozzle that fastens to your 2nd stage mouthpiece that draws the gas whilst measuring the deflection of water.  Mounted alongside on the wall panel is my o2 flow meter for checking oxygen flow rates of rebreather constant mass flow valves or needle valves.