LP gas torch with 3 different size nozzles. That's my big spider burner at the back.
Looking into the burner end, that's the twister thing that makes the gas and flame swirl. This is the biggest of the 3 nozzles and is 23mm (29/32inch) inside diameter and is 50mm (2inches) in from end.
You can see the twist of the flame.
This torch runs best at about 150Kpa (20PSI). That's a reasonably late model Acetylene regulator, I nose it regularly just in case it starts to leak Propane.
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