Antique American industrial metal caged trouble lights / factory wall sconce lamps, circa 1920-25. Dreadnaught (McGill Mfg. Company, Valparaiso, IN) hand-lamp work-light sconce on oak sconce plaque with wood clamps. Solid steel cage and hanger hook with a turned maple hardwood handle. Edison bulb and new braided lamp cord. Features antique Arrow porcelain On/Off rotary switches made in the U.S.A.