As far as the "stone" being archaic: hell, the *pound* is archaic! I have to do the same as McGrath and run a bit of mental arithmetic if I want to work it out. My weight in pounds is OK with multiplication, but translating from US weight is always harder because division ain't so easy.

I forgot to mention this before. The Register defines its own standard units. Warning: do not drink and read, as it may cause you to snort beverage out of your nose...

Graham.