Gas flowmeters are a simple, low cost way to test every welder and gas flow regulator in your shop to save big on wasted gas
With the wire feed drive roll disconnected and the weld gun pointed upward, hold the Gas Flow Checker against the end of the weld gun nozzle and depress the trigger on the welding gun.
Gas flowing through the gun pushes the stainless steel ball up the acrylic tube
Gas flow rates are read on the scale printed on the acrylic tube (Argon / Co2 / Nitrogen in LTR/MIN and CFH)