I really don't want to get into this except in a light-hearted way....<br/><br/>... but seriously? Okay, the rest of the world, with the exception of the USA, uses the same metric system.<br/><br/>Oh and for your information, the correct term is "Imperial"! It was invented by the Roman Empire<br/><br/>And in the UK, where the Imperial system has been used longer than anywhere else that it is still in use, we have the dubious honour of interchanging freely between the two.<br/><br/>So, in the UK, you can actually buy a 3m length of 2"x4" timber!