Problue S-05-3 Adjusting tool for 2nd stage

Popular tool used for calibrating regulator 2nd stages which have an adjustable air inlet orifice. This tool connects in-line between the 2nd stage case and the hose. An internal probe allows the orifice to be turned to the correct position. This model has a stainless steel flat screwdriver like adjusting tip, which fits the more common slotted regulator orifices.