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This looks like it might be interesting to (re)make, from "How To Build It 1932"-
"HERE is a combination water and weight clock that anyone reasonably adept with a soldering iron can construct. It makes a novel addition to the den and generally draws the interest of persons unfamiliar with the principle on which it operates.
The important part of the clock is a metal drum partly filled with water. It is suspended by two cords wound around a rod which passes through the drum. Gravity tends to cause the drum to revolve as the cord unwinds, but this motion is controlled by three baffle plates, each pierced by a tiny hole, which are soldered within the drum." - Link.
Related:
- Hundreds of clock projects @ MAKE - Link.
