> "k" really ought to be "K" to indicate that its greater than one Presumably K(elvin) and H(enry) were taken first and/or decided upon as SI units, bumping the lesser uses down to k and h http://en.wikipedia.org/wiki/Kelvin http://en.wikipedia.org/wiki/Henry_%28inductance%29 http://en.wikipedia.org/wiki/SI "The one exception is the litre, whose original symbol "l" is dangerously similar to the numeral "1". The NIST recommends that "L" be used instead, a usage which is common in the U.S., Canada and Australia, and has been accepted as an alternative by the CGPM" Don't know if I could ever get used to "L" for litre. Just looks too....big. But I might get used to it quicker than GM for g on a box of cornflakes -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist