Seems like a missing piece to the laser how are you figuring your nozzle air flow without one?
You are correct, there isn’t one on the AVID kit, and without one you really can’t tell what it is, or get repeatability on its setting.
I have used one like this for a long time and they are easy to read from a distance and aslo let you control the airflow.
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Okay thanks I’m going to check that out!!