I cook regularly and I have yet to see a recipe call for a "dessert spoon" of sugar. Tablespoon, teaspoon, etc - yes. Those are standardized measurements. Most kitchens in the US have a set of measuring spoons and cups required to ensure accuracy of ingredient measurement.

Let's see. In the US most bars/pubs offer more than one size of beer glass/mug. There's the 16oz (fluid ounce), 20oz, and the 24oz. Most brewpubs seem to offer the 20oz as the standard size.

Then there is the growler. They actually come in many sizes.

Most of you probably aren't auto mechanics. I used to be some 23 years ago. Back then cars made by GM were a mixture of metric and standard bolts. Whoever decided to do this was a real nutcase. As a mechanic I preferred metric over standard everyday of the week. Much simpler to deal with.

I still deal with that on medical laboratory analyzers. The pieces made in Europe and Japan are metric and the pieces made here in the US are standard. It ensures you get to own and use twice as many tools.

I was just looking for my metric cheesegrater because I was going to eat some Mimolette cheese on my tacos. I couldn't find it so I told my wife to go buy some American cheese instead.