Here's the original Phillips (he of the curve) Machine:
Here's the schematic, from the New York Times:
Two weeks ago, while visiting Cambridge University, I arranged to have lunch with my friend Allan McRobie. He’s a professor of engineering, so it seemed a bit strange that he kept insisting we meet at the department of applied economics. “There’s something there you’ve really got to see,” he said in his Liverpudlian lilt. “It’s utterly fab. Just brilliant. The Phillips machine — it uses water to predict the economy.”...MORE
And here's the latest incarnation:
The second schematic is from a post on GE's Mark I nuclear reactor at ZeroHedge!