Descriptors | Boxes (electric), Electric cable systems, Electric conduits, Corrosion tests, Pipe fittings, Pipe supports, Design, Dimensions, Mechanical testing, Threaded components, Dimensional measurement, Gauges, Linear density, Ring gauges, Plug gauges, Electric wiring systems, Gap gauges, Thread gauges, Bend couplings, Junction boxes, Pipe tees, Elbows (pipes) |