1 point
That is understandable, I was surprised that metric is actually used somewhere. Use in pharmacy also explains why in Hollywood stoner comedies they used grams, which always confused me.
1 point
It’s used all over the place in the US. It’s usually a weird, thoughtless mixture. Milk is sold in gallons, soda is sold in liters.
In fact, you’ll find exceptions in most countries once you start looking for them. Just a matter of how prevalent the metric system is; nobody is 100%. Most common exception is car tires because of how industry standards work.