I should add that it's still fairly common in Britain to use imperial measurements, especially among the older generation. I'm not so old but I still tend to think of my height in feet and inches, and my weight in stone, although I know both in standard metric units too, and use metric for most other things. Distances and speeds on the roads are still measured in miles in the US (I think) and in the UK. I believe Americans talk about peoples weight in pounds.