Replacing a broken gauge on your pressure regulator is a snap with this Replacement Low Pressure Gauge for CO2 or Nitrogen regulator. Installation is simple, and it prevents you from needing to buy a whole new regulator.
I ordered to of these, one was effect, the other read about 25psi before I’d taken it out of the plastic wrapper. A quick adjustment and I got it to 0 psi. But what do you expect for $10. I’m not sure either of them are super accurate, but I’m sure I’ll learn where I need to set them for the carbonation I need in my kegs