How can you tell how much is left in your gas bottle?
My regulator has a bottle pressure gauge which stays at the top for quite a while then gradually runs down to zero, but the bottle isn't empty.
I can still get a fair bit of use before there is none left.
I am about to do a bit of work and i don't want to run out mid-job, mainly because I don't want porous welds in inaccessible places that I can't grind out and redo.
Is there a way to tell his much is left?
Also is that pattern of gauge reading common, or have I just got a cheap and nasty gauge?