Mike Joy wrote: >UK FFU at least uses larger unit e.g. 'tons' or�'miles'.
If you see the written word 'ton' in the UK, it will almost certainly mean 1000 kg. I would be very surprised to see any other meaning intended except in historical references. I expect that many written instances of the word 'ton' in the US also mean 1000 kg. The phrase 'metric ton' is in common usage in the US along with colloquial versions such as 'metric buttload'. This makes me think that many Americans are very familiar with this measure being used, and almost expect it, regardless of whether the prefix 'metric' is applied.
