What is this thing?

[Goodwitch9]

What is this thing? Found it in a drawer so I must have thought it was important!

Do they actually measure centimetres or are they a different size?

I'm guessing it slots into some kind of kitchen or hobby gadget.

Does it actually do anything? Does it have a button of sorts?

Years ago used to get something like that with doliprane in France, dosing guide. Now they dose the syringe.

It could be a portion measurer for some sort of cooking device (soup maker, rice cooker?) where it dips in so that 0 is some way up the stick just below the 2 and each increment is a portion

I think it's for measuring infant shoe sizes

Does it slot into something so you can measure/cut pastry in rounds to size?

I looked in my kitchen and there's a coffee maker I inherited but have never used and its the same colour plastic so think it must be for measuring cups of coffee. Thanks everyone!