I just realized while cooking that a measuring-cup cup (as measured out as 250mL in a glass measuring cup) is the same as one of the actual baking measuring cups that go inside each other like Russian dolls lol
I thought they were different somehow (something something imperial metric yadda yadda yaddda)
Your turn to come clean Lemmings!
I think they are referring to the measuring spoons used for dry ingredients. In middle school home ec class, we were told to never use dry measuring tools for liquids and vice versa, the teacher implied that the measurement would be different