Anyone still using one of these?

[peege]

Mine still works fine, but its hard to read in low viz.
For those who dont know, the end pushes out under pressure revealing a color coordination of green, yellow, red rings. As the pressure decreases, the green receeds first, then yellow, then red, as indicators of pressure.

Still has the scubapro patent sticker number on it, though faded a bit.

 

[Mike Lev]

I have one like new.It works great they vibrate when your air is low around 300 PSI .I used it once.I don't want it to get beat up.They are rare.Iv'e seen them go for $100 or more.