Miodrag is a Serbian wave tester from "the lab." Perhaps I should have put wave tester in quotes as well, since that's his layman's term for whatever it is he does. He says he tests waves for consistency.
When he was explaining this, I asked, "like a reuben"?
He had never had a reuben, so I had to do some explaining of my own. I said, "When you eat a reuben sandwich, you don't want a mouthful of sauerkraut--you've got to have a consistent meat-to-cabbage ratio in every bite or it can be a frightfully unpleasant experience."
Miodrag said he's sure it must be something like that.