The results would double the sample size and better support the conclusion.

It was a home hardware and most of the longer ones with nice features were inches only. There were a bunch of metric only ones, too, but it's nice to have both when some furniture descriptions have only one or the other because the tape then handles the conversion without having to remember if that 2.2 factor is inches to cm or kg to lbs or both.

Though it could be that whoever decides what products to stock at home Depot is just better at their job than whoever does it at home hardware, or maybe I'm in the minority locally of wanting both and preferring metric if I have to choose one.

My favorite mixed unit is the standard adiabatic lapse rate, which is given as 2 degrees C per 1,000 feet.

I accidentally bought an engineers ruler that's in 10ths of a foot on one side. That's a real pain in the ass. Or that side of the square that's in 12ths. But I'd really like a fractional metric ruler. 7/16ths cm.

Like being a polyglot, learning more than one language has its benefits,

That's what irks me about the "anything other than metric is stupid" crowd. Who needs less tools?

Same way you'd take a third of a centimeter: Get out a micrometer and set it to 0.3333, that'll be pretty close.

The main benefit to the metric system is it's all base ten. One kilometer is 1000 meters, one kilogram is 1000 grams, you don't have to memorize that there's 16 cups in a gallon etc. For a lot of things that works well, the problem is with base ten itself. You run into the same problems with 1000 millimeters in a meter than you do trying to work in thousandths of an inch, it doesn't divide by 3 particularly well and you get those weird repeating digits.

We kinda did have a base twelve system going, isn't it weird how we have a special word for twelve in English? There's 12 hours on a clock face and 12 inches in a foot. And from there, we work in powers of two.

Woodworkers don't traditionally cut boards to 1 inch or 2 inches thick; they're rough sawn to that thickness and then dried and milled to 3/4" or 1 1/2". Which are 1/16th or 1/8th of a foot, and both are divisible by 2 and 3 and expressed in a power-of-two fraction. a third of 3/4" is 1/4".

It works very well until someone who doesn't actually understand it tries to contrive a way to make it not work in the same way their preferred system also doesn't work.

For many other things, the metric system is easier to deal with, I would much rather do physics in metric than in Imperial (also I'm American, I actually use SAE) but woodworking in a dozenal system is a discipline that is millennia old, the bugs have been very thoroughly shaken out. I would rather build furniture in inches.