"Metric Ton" you say? I don't think so. A ton is a British measure of weight, and is in "pounds". The metric system does not recognize or use pounds. The more relevent question, and I had it as I read Graehm's 3rd edition, is it the standard ton, 2000 pounds, or the Long Ton, which is a very British measure of weight, and I think is 2200 pounds. That is the real question. BTW, by all means get the 3rd edition. its is far more informative and complete.