Mini analog pressure gauge 0-30psi

Mini pressure gauge 0 - 30 psi

Mini pressure gauge 27 mm x 27 mm x 8 mm 0-30psi

These are quite easy to install into a tank and depending on the tank wall thickness, to install such a gauge you only need to drill an approximately 8mm diameter hole in the tank, then insert the gauge and secure it with screws.

This analog mini gauge can also be used to upgrade: (if the old gauge broke)
Blowtie Spunding Valve.
Duotight Inline Regulator.
Core 360 Mini Regulator.