If you fidget with your jewellery and tiny horses don't start revolving on top of your hand, you're wearing the wrong ring. Check out interesting metalwork by Ryan Su, including this kinetic carousel ring.
krazy kinetic rings, by Sarah Doremus, see her website for more 'Wave' !
These kinetic rings are designed and fabricated with precisely calculated gears and wheels. When the wearer rolls the primary wheel along a surface it measures length, which then can be read by the two hands on the top dial. By Dukno Yoon.