[r00fus]

Since it's a big "moat" for parts manufacturing (mainly for defense industry)... I predict the USA will give up imperial units when it's empire finally collapses.

Perhaps in the next few decades as China builds its own economic sphere.

[not2b]

Carter started a transition to metric in the 1970s and Reagan killed it. It became a nationalist thing to keep it.

[denton-scratch]

Um, it's unamerican to use "imperial" units. When you have a revolution, you have to get rid of all things imperial!

Therefore US pints are 16oz, not 20oz, and so on for most fluid measures (fluid ounces are based on dry ounces, which are avoirdupois, not imperial).

[r00fus]

We kept linear measurements the same (feet, yard, miles). So it's a bit of a stretch to say we're not imperial. I'd say it's "US imperial".

[denton-scratch]

I was about to comment that feet, yards and miles are not imperial measure; but I checked, and WP says they are in fact imperial units. So i learned something today.