No, but you can't have gradations of weight on something like this to measure candy, either. Hypothetically speaking, the volume gradations could have serve as approximations for weight when dishing out something like candy.
I haven't seen the cologne dispensers Ivo is talking about, but the glass urns, whiskey barrels, samovars, etc. that I've seen all had taps much smaller than the tube sticking out of this piece, and it seems odd that this one's so big. Anyone with knowledge of different kinds of taps that might be suitable here?
please do not treat this as a guessing game.
What is the standard here? Some guesses are okay and some aren't? Or is it that some people's guesses are okay, and others' aren't? What's the problem with suggesting alternatives, even if they end up being wrong?