Westinghouse Round-type electric meter, 1904
Purchase a reproduction of this item on VintageMaineImages.com.
Oliver Shallenberger had developed an integrating-type watt-hour meter for Westinghouse that fit well with the industry’s need for a watt-hour meter, but it was heavy and expensive.
H. P. Davis and Frank Conrad developed this light-weight and less expensive round-type meter.
If you'd like to privately share a comment with MMN staff, please use this form.