Gene Mechtly wrote in USMA 24062:
Prefixes applied to the gram form *less coherent* multiples and submultiples. Incoherence of units is not a serious problem for retail trade, but reduces simplicity of science and engineering calculations.Gene.
Use of the tonne does not solve he problem. The gram is 1/1000 of the SI base unit of mass while the tonne is 1000 times the base unit.
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Joseph B. Reid
17 Glebe Road West
Toronto M5P 1C8 Telephone 416-486-6071
