On Wed, 11 Jul 2007 21:09:00 -0700, Walter R. wrote:

http://www.apcmedia.com/salestools/T...XPED_R1_EN.pdf a conversion table
for A/c tons is at the end of the article

A/c tons represent a truly archaic term. Needless to say, the rest of the
world has been using the much simpler and more elegant metric system for the
last 200 years. Only the following countries do not use the metric system:
United States, Liberia, and Myanmar.

Horsepower is just as archaic, is not a part of the metric system, and the
whole world has no problem using it.