Hi, On the Starparts gas gauge that comes with the RTech 181 mig welder and before I fit it, is clockwise open or shut? I seem to remember someone saying it's opposite to the gas bottle.
If you are talking about the regulator that fits to the bottle then screwing the knob clockwise will open the regulator to the flow. Fully anticlockwise is effectively closed. Still close your bottle off as well.
I believe what you maybe referring to is the L/Hand and R/Hand gauge mounting gland nuts to the bottle, L/H is for flammable gases R/Hand is non-flammable gases.....possibly.