To be fair I do have natural, LPG, calor, map, Co2, oxygen and acetylene to think about before giving the wrong answer.
To stop monkeys making gas bottle stoves i was told Apparently there as clever as us humans but left hand threads and opposible thumbs are all that set us apart in dominating the world Beware the monkeys
find when it comes to change a grinding disc is it rh thread or lh thread every time i end up making it tighter doh.