No commercial work. Just my cars (and friends and relatives if they need a hand). Do you know if the interdynamics gauges are Chinese? I’m at the point now where I’m actually looking for that and trying to avoid it.
Here’s a set I found that gives some decent info (and looks like a “good set”) It’s made by Imperial:
www.professionalequipment.com/imperial-service-manifold-gauge-hose-set-631ckp/hvac-manifolds/
It’s UL-compliant, for whatever that’s worth. It has 4 valves, and is usable for R-134a and R404A (heat pumps?). It’s not “cheap” … $167 delivered.
Here’s another thing that’s unclear to me: some of these units say “2-way, 3-way, 4-way”. Does that mean the number of refrigerants they can read, the number of valves they have, or something else? None of the writeups explain this.