»How many Luxemborgs is Wales?

Arf's Sensible Units web site elegantly converts one measurement — 181 cm, say, — into something less abstract: 1.3 Alaskan moose antler spans. 15 CDs side by side. A little less scientific (and more joyful: "Convert boring units to real objects as you type!" is its slogan) than the sensational Google Calculator, but no less useful. For the record: 1 Wales is 8.0 Luxemborgs.