In the smaller and deeper cup "top" part, there is a deepish (~1") hole (where folk had put candles) in the centre, and around the outside edge of the inside, there are those 6 little "platform" bits, which look as if something might sit on them... or I suppose they could fit onto or into something, if that's the bottom part - but if it is, and there's anything substantial on it, it would be quite unstable.
There is no indication that it would measure anything accurately, neither is there anything for anything to pour from. I would discount a measure, or anything vaguely lab-ish.
:spls: