The "metrification" of Dutch customary units is a fascinating subject on itself. The "ons" was in fact quite close to the ounce, but it was set to 100 grams dur

The "metrification" of Dutch customary units is a fascinating subject on itself. The "ons" was in fact quite close to the ounce, but it was set to 100 grams during metrification. The step from 1 pound to 1 metric pound = 500g was less noticable.