David, I just read your article of September 11th.
Unfortunately, the FPLA has still not been amended to *permit* metric-only labeling on products regulated at the Federal Level although metric-only labels are now permitted on most products regulated at state level by *nearly all* states of the USA! Given the FPLA as is continues to exist in US Law, you had no choice but to discuss "duality"; SI Units and Units Outside the SI. There is one technical point what I would have recommended. Compare the "values* of both declarations; a number and a unit in SI with the equivalent of the other number and its non-SI unit, *afer* the latter has been converted to its value, i.e. its number and unit in SI. The larger of the two "values" of the declarations (or two measurements) are to be compared, not the larger of the two units in question. Eugene Mechtly
