Ah. I was thinking of a comparable scale for liquids and fluids, as in, say, cooking. I can't decide if recipes that are obviously translated exactly from wierd-old American-and-British units but expressed in metric are more infuriating than ridicuolous or more ridicuolous than infuriating; probably six of one and half a dozen of the other: "Take 138 g butter and 267.5 ml milk..." No, for fuck's sake! Take 140 g butter and 250 ml milk! Or 150 and 300 -- i.e 3 dl. Sheesh...