>>> To put things even worse, the pupils in a 9th grade public school >>> here >>> in Sweden does not know how many cm (centimeters) is a m (meter). 1. It doesn't matter, as a cm is a unit from the pit of hell and has no place in an engineers toolbox ( notwithstanding the fact that I use them frequently :-) ). 2. There is no such thing as a centimeter * in Sweden :-) - only in The US of A where they think that even the names of official international units can be respelt ** different like coz they don't like the way they are really spelt**. Long ago my son spelt LASER as Lazer. I said that that was incorrect. He said that that's how the Americans spell it and so that's how it was these days (maybe not quite in those words). I disabused him of the notion that an acronym could be respelled (let alone decapitalised) to suit some US whim. He concurred. It's quite possible that that was the last 'argument' with him that I ever won :-). Maybe the only one. I didn't point out that it was (AFAIK) a US acronym in the first place. Russell * Real life: metre USAism: meter Being a metre matter as it's made, no doubt, from forms which give us other words. With meter we can expect meterication and its ilk. ** Anglo-pedants *** corrigenda: respelled, spelled, *** eg Jinx -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist