Air rifle gauges

Whats a gages? Do you mean gauges on the guns? They do not work as burst disc found on tanks and compressor. Tanks and compressor use brust disc so if they ever get fill over their max capacity, the burst disc will blow letting air out, so the tank or compressor don't go kaboom.

The gauges on airgun are not burst disc. If overfill your gun it can go kaboooooom. The gauges is only use to let us know what pressure is inside our gun.
 
I would like to put digital gauges on my raw, any recommendations?

My guns currently have ninja gauges in them. I am not sure it they are accurate. I have a hand pump and when it reads 3000 psi, my gun bottle gauge reads over pressure. I also have a umarex readyair compressor and it has a digital readout. When filling I have set it to 3000 psi, and my gun still reads high. 

It there a better (accurate) replacement out there? I would like to replace on my airgun with a 3000 psi fill, and my airgun with a 4500 psi fill.