Tsyr said:
Back in 1999, IIRC, I started a thread on the DND-L (when the game designers still visited the list) asking the WotC to have the metric sizes listed alongside the Imperial ones. It would hardly increase the page count, and would help a great deal to us poor folk completely unused to the antiquated system. There was a somewhat heated discussion, but nothing signifficant happened.
Even after 10 years of playing D&D, I still have difficulties in getting the dimensions right, but I've managed to memorise a couple of referential sizes, so I manage.
Funny thing is, our local feet and inches (we call them "thumbs") are larger than the Imperial ones (IIRC, 1 inch = 2,65 cm). We still use the Imperial ones, though.
On a related note, I prefer British English to American. Although it's somewhat difficult for us non-native speakers, since (except by reading materials dealing with the difference) there's relatively little material readily available using British English.
Anyway, I seem to be babbling randomly now, so I'll shut up.