I cast my vote for continued use of cm. mm is useful, of course, depending on the size involved. It's easy to say that a sliver in your finger is 3 mm long, but much more convenient to say your skis are 180 cm in length or that the down tube on your bike is 46 cm or that the high jumper cleared 195 cm. My height is 176 cm, or "one seventy six". People understand the differences between mm and cm, and I don't really think there is danger of confusion. Using cm a lot will not delay whatever progress we may make in metrication in this country.
HARRY WYETH
