I love that bridge maintenance kept the smoot marks and started using them to identify locations for repairs or problems. They even replace them if repairs remove them.
It’s also the only place I’ve ever seen anyone use a decilitre. Why they went with that and not the typical 100 mL, I’m not sure.
I like this one a lot. Often, there are multiple chemicals that have essentially the same effect on a human, like different forms of vitamin D. And those chemicals have different weights. I don’t really care how many milligrams I’m taking, i do care how many IUs I’m taking.
It is a convenient unit, e.g., you could measure someone’s blood alcohol in grams per decilitre. For something like liquor bottles, on the other hand, it is too gross a unit so they use cl.
Especially if there are 144 decilitres.