Electrodynamometer polyphase wattmeter #126. This instrument is mounted in a glass case and is cut away to show the internal construction. It is a 1939 model based on Weston's design.
NJIT Robert W. Van Houten Library, First Floor, Case 7, Shelf D
Base 11 1/4" x 12", Height 9 1/2"
Matthew Brown & Zackary Kellett
Glass, copper, iron, brass
Donated by Edward Weston
Wattmeter, Electrical, Measurement, Weston, Instrument, Magnet, Polyphase