I get them from my local "Do It Best" Hardware store. They are for welding tank regulators gauges. I get the one that shows the pressure in the red zone from 15 to 30 lbs. It's easier to see the lines than the one that goes up to 60 psi. If they don't have it in stock they can order it for you.
Where do you get one of the gauges that you had sticking out of the regulator?
I get them from my local "Do It Best" Hardware store. They are for welding tank regulators gauges. I get the one that shows the pressure in the red zone from 15 to 30 lbs. It's easier to see the lines than the one that goes up to 60 psi. If they don't have it in stock they can order it for you.