A little metric trivia: meter is one 10 millionth the distance between the north pole and the equator on a line running through Paris! Makes you wonder how many meter sticks they wore out measuring that?
Officially adopted be the US in 1866. First meter rods to be used as standards delivered to the US, England and France were not really as good as they should have been, if I had to guess England would have gotten the short one.
   25.4 CM per inch is the better conversion, more accurate than 39.37 inches to a meter.
Our most accurate machine has a resolution of .0005mm or 2 millionths of an inch in the X axis. I hear people say you can work closer in MM, but each unit of measurement can have more decimal points added for more precision. We make lots of metric parts using inches in our drawings and programing not because it is more accurate but because I am hard headed and do not want to change.


Don't forget to note the retraction/correction in the next post!