32 DEGREES - 1200PSI PAINTBALL MICRO GAUGE
These gauges are for regulators, tanks, or guns that need a gauge to read the pressure. If your gauge has a cracked on it then most fields won't allow you to use it.
Installation is as easy as unscrewing the old gauge, putting thread tape on the threads of the new gauge, and screwing the new gauge into where the old gauge sat.
These gauges are made by 32 degrees, who have been in the paintball scene for a very long time. 32 Degrees definitely know their products, so when purchasing one for yourself there is no need to hesitate.
Industry standard 1/8-27 NPT thread
Diameter is 25mm.