I was thinking that accuracy would be easier if you are starting with a dry container, so that one wouldn't need to use fluorinert. You could always combine th

I was thinking that accuracy would be easier if you are starting with a dry container, so that one wouldn't need to use fluorinert. You could always combine the two: measure while filling, and then while draining, then average. I also wonder if instead of using discrete angles and multiple fills (or drainings) one could just tilt the container, possibly even slowly rotating it continuously. Add a squirt, measure the liquid level for a 360 rotation, then add another. Edit: just saw your other comment suggesting similar things!