Using vacuum gauge to tune engine?

LovetheA's said
Here is the engine running warm at idle and what the gauge says. Is this vacuum too low for the combination I’m running?

That's about right imo,close. I know it's the hyd cousin of the .528, so they say... and it's right about there installed with 2 adv@10inches.
Install it @5 degrees adv and itll pull 12 inches with a dual plane.