I’ve heard before it’s because 1/3 can be represented as a whole number.
Just like feet, which can have 12 inches. But if we want to get more precise we start cutting inches into eighths for some reason 😅
I always use decimal inches wherever possible, personally. Makes so much more sense to me than “3/64” or some crap like that
A base 12 metric system is the best of all worlds. 1/3 of a cm is 0.4cm or 4.
Your way seems like the worst of all worlds. What is 0.1 feet in inches? shrugs. If you’re going to use a different system to the people around you, why not use normal metric?
I said decimal inches, not decimal feet. Also, I use them personally with my own projects, not when giving measurements to other people. 4.25 inches makes more sense to me than 4 1/4 inches. I could use cm but I’m more used to inches since I live in the US. If I were to give my measurements to someone else I’d use fractions, since that is the standard here.