Tested and working, new power cord installed, connects to a standard type A electrical outlet. Two element wattmeter on 3 phase and 3 wire circuit by Esterline-Angus, Indianapolis, U.S.A., serial 135977. Very clean, original paint, glass windows intact. Original connection diagram on back and paper roll installed. Easily opens and closes with a latch. Portable unit, sturdy rubber handle, weighs 28 pounds and measures 8.5 X 11 X 15 inches. From a collector's estate in Montreal (Quebec, Canada).