Greg Peterson wrote: > Has there ever been, in history, a move to replace the Troy > Ounce with the gram, decagram, hectogram, or kilogram? In 1987, I bought a 24-carat (i.e., pure) gold chain in Hong Kong. The invoice showed its mass in both taels and grams. It was subsequently stolen, sold to a gold dealer in Vancouver, then recovered by the Vancouver Police Department. The records showed only grams. I don't know if this fully answers your question, but it does show that the Troy ounce is not universally used. Bill Potts, CMS Roseville, CA http://metric1.org [SI Navigator]
