Israel's Arad Group CEO Dan Winter shows a water meter during a demonstration of a fly-by system, which collects data from water meters, in a field near Tel Aviv October 19, 2009. Outside a small town near Tel Aviv, a pilotless drone aircraft with a three-foot (1-metre) wingspan collects data from hundreds of gauges. A single technician with a laptop monitors the flight from the ground and receives an instant picture of the town's system, including, he says, a house with a leaky toilet. A plane that reads water meters -- as well as a tiny turbine that can generate electricity from within water pipes -- are among technologies Israeli companies are developing to help save billions of dollars in water lost from leaky pipes. Picture taken October 19, 2009. To match feature WATER-ISRAEL/LEAKS REUTERS/Gil Cohen Magen/Files (ISRAEL ENERGY BUSINESS ENVIRONMENT SCI TECH)
REUTERS/GIL COHEN MAGEN