| 6-18 — elektor june 1981 water level indicator C. Notzel water level harator electronic "flower power" Did you know electronics had green...
More about Water (113)
| 12-46 --- elektor december 1980 water can This is an outdoor game for two players, both armed with a bottle of water and a ball. At a certai...
| 7-22 elektor july/august 1980 The level of water in a water tank can be measured in various ways, some of which can of course be more compli...