We all wish the USA would go metric, tbran! and bloody soon. We just can't understand how the world's major power and the leading technological nation of our times is so out of touch with the rest of the world and so stuck in a now obsolete time warp of bushels, pounds, feet, inches and and miles, a time warp that they just don't seem to have the will to pull themselves out of. In Australia, my generation, us old fogies in other words, went through the change over from the imperial to the metric system in the early seventies. Australia didn't mess around. We did it all in one go and got it over and done with. It was well planned and had been planned for years so we knew what was coming and was therefore fairly painless. There was some opposition mostly by the older generation of the time, but not a great deal. As I grew up with the imperial system, I still revert to it quite often but now use mainly metric. It has taken Rolf some 25 years to convert me to using hectares instead of acres but I am getting there! It was fairly easy to convert from bushels to tonnes of grain. After all the world trade in grain is all done in metric tonnes and I now have a lot of trouble converting back to bushels, particularly bus _ acre, when talking to you guys. A major problem we have in some of our industries and aviation is one, is that the american light aircraft are still all imperial measurement based. As a result the apprentices that come from the schools and move into working in these industries have to be completely retrained to used the imperial or obsolete american systems of measurement. One very expensive Mars orbiting satellite that was a cooperative enterprise between the US and Europe was completely lost because the Europeans used the international metric system for their section of the satellite and the Americans, who knows why, persisted in using the old foot _ pounds system. Nor did the Americans tell the Europeans that they were doing this and so the satellite's internal and external communications were incompatible and just did not function when needed. Our currency was changed to the dollar system in the mid 1960's thank goodness. The old english pound system was a nightmare to work out. Cheers!