Lol.

But yes, we do have graduation marks like this one, which would also clearly label the 1/4 cup and 1/3 cup parts. Whichever one you have, it's pretty intuitive that 1/3 > 1/4. I prefer the separate ones since they take up less space so they can go in a drawer instead of the cupboard (and I have 2-3 of each size), but to each their own.