We have just over the last few years been making the switch to HD TV, whereas, most countries had high definition tv's from the outset. As for metric, we really should have changed over in the 60's/70's when it was being pushed, taught in schools, etc.

I would like to find a good source for metric dimensioned balsa here in the US. It's so much easier designing, drafting and scratch building using millimeters instead of 1/32" for example.

David