what about a 4.2m length of 4" by 2" ?
Still used to this day by newbies as well as oldies
I get this all the time as I work for a Hardwood Timber Merchant. We always use metres & millimetres and I have to stop to think if somebody uses centimetres. Mind you that is normally from some div who fancies making themselves a book-case or something (I don't want your bloody business in the first place ) If you start talking about Kg or litres I don't have a clue what language you are using