Hynautic control Reservoir slow leak

[MV Mystery]

Continuing this tread. I changed the “dill valve” for an original and recharged the system. There’s still a slow leak so onto the gauge replacement. Would any brand of 1/4” air pressure gauge work. I ca get that result where I am, the original will take longer . I note that mine is not the same as the hynautic replacement. ( mine is. “Utility one” brand- which has lasted at least 15 years) and the hynautic replacement is “CPI-Continental precision instruments”

Any thoughts on a generic?

[MV Mystery]

Something like this?