I believe this subject has been discussed in a topic a while ago, but I'm too lazy to search for it.
Metric is the standard in Brazil and we use it as much as we can. Of course, there are pneumatics and IFI stuff to deal with.
I disagree with the above statement that using both is good. Not only it can lead to confusion - ask Mr. Lavery about that - , that's twice more tools to work with. Sure doesn't help in keeping the room organized.
No time from now USA will be the only country to be fully using Imperial - even it's founder, the Britains, are being forced by the European Union to switch to Metric.
