Photo courtesy of Milwaukee Electric Tool Corp. New tool tests fluorescent bulbs and ballasts, in some cases, without a ladder. The electrician who walks around the office all day with a cart full of bulbs may be eager to try out Milwaukee Electric Tool Corp.'s new fluorescent-lighting tester, which combines bulb and ballast diagnostics in one handheld tool.Because few options exist to test fluorescent bulbs before replacing them, lighting technicians “have adopted a replace-and-hope strategy,” says Jon Morrow, director of product marketing for Milwaukee's testing and measurement line. “There is no meter out there to test and diagnose lights,” he
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.