Will we be going back to cycle thread after xmas. Folk here still talk in gallons and feet & inches.
Just think if folk said there car was a thirty cubic inch engine instead of cc, opps forgot about the yanks.
Cry me a river..... All our fridge pipe comes in 15m/30m rolls....
Internal diameter or 1/4-3/8-1/2-5/8-3/4 etc etc....
Insulation we cover it with comes in metric sizes... So 10mm for 3/8 pipe...
No wonder I'm bald