A Hand-Cranked Automaton That Mimics the Effect of a Raindrop Hitting Water

This little wood automaton is meant to mimic the effect of a water drop hitting a body of water, all using concentric rings cut from wood that are manipulated by a hand crank. The piece was created by UK-based designer Dean O’Callaghan, inspired by the work of Reuben Margolin (most likely his round wave sculpture)...
(via The Automata Blog)