Westinghouse Type A Polyphase Wattmeter, 1903-1906

Summary

In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used -- and then charge them accordingly. Paul McGahan, a Westinghouse electrical engineer created a practical polyphase wattmeter in 1899 to measure electric power usage. This design was adopted by other companies and remained a standard well into the mid-1900s.

In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used -- and then charge them accordingly. Paul McGahan, a Westinghouse electrical engineer created a practical polyphase wattmeter in 1899 to measure electric power usage. This design was adopted by other companies and remained a standard well into the mid-1900s.

Artifact

Wattmeter

Date Made

1903-1906

Henry Ford Museum
 On Exhibit

at Henry Ford Museum in Made in America

Object ID

29.1333.16

Credit

From the Collections of The Henry Ford. Gift of Westinghouse Electric Company.

Material

Metal

Color

Black (Color)

Dimensions

Height: 12 in

Width: 7 in

Length: 4.5 in

Inscriptions

on front: WESTINGHOUSE, ELEC & MFG. CO. / PITTSBURG, PA., U.S.A. POLYPHASE / WATTMETER

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