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- "Meter-Ice" Coin Operated Refrigerator Meter, 1935-1945 -
- 1935-1945
- Collections - Artifact
"Meter-Ice" Coin Operated Refrigerator Meter, 1935-1945
- General Electric Thomson Recording Wattmeter, circa 1903 - Elihu Thomson, engineer, inventor and cofounder of the Thomson-Houston Electric Company, developed a commutator-type wattmeter in the late 1880s. His recording watt-hour meter helped transform the nascent electric power industry. The sturdy device provided companies that supplied electricity to consumers a way to accurately track and bill electrical power use.
- circa 1903
- Collections - Artifact
General Electric Thomson Recording Wattmeter, circa 1903
Elihu Thomson, engineer, inventor and cofounder of the Thomson-Houston Electric Company, developed a commutator-type wattmeter in the late 1880s. His recording watt-hour meter helped transform the nascent electric power industry. The sturdy device provided companies that supplied electricity to consumers a way to accurately track and bill electrical power use.
- General Electric Foot-Candle Meter, circa 1925 -
- circa 1925
- Collections - Artifact
General Electric Foot-Candle Meter, circa 1925
- Excelsior Electric Company Ammeter, 1890-1900 -
- 1890-1900
- Collections - Artifact
Excelsior Electric Company Ammeter, 1890-1900
- Zinc Plates for Electrolytic Meter, 1880 -
- 1880
- Collections - Artifact
Zinc Plates for Electrolytic Meter, 1880
- Output Power Meter, Type 583-A, Used at Ford Motor Company, 1931-1940 -
- 1931-1940
- Collections - Artifact
Output Power Meter, Type 583-A, Used at Ford Motor Company, 1931-1940
- Westinghouse Type C Switchboard Wattmeter, 1906-1911 -
- 1906-1911
- Collections - Artifact
Westinghouse Type C Switchboard Wattmeter, 1906-1911
- Westinghouse Type SL Voltmeter, circa 1911 -
- circa 1911
- Collections - Artifact
Westinghouse Type SL Voltmeter, circa 1911
- Sangamo Electric Company Gutmann Type A Wattmeter, 1899-1901 - In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used -- and then charge them accordingly. Ludwig Gutmann, one of several inventive electrical engineers who designed meters to calculate power usage, developed this induction-type wattmeter. U.S. production of this meter stopped after courts ruled that it infringed on existing patents held by Westinghouse.
- 1899-1901
- Collections - Artifact
Sangamo Electric Company Gutmann Type A Wattmeter, 1899-1901
In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used -- and then charge them accordingly. Ludwig Gutmann, one of several inventive electrical engineers who designed meters to calculate power usage, developed this induction-type wattmeter. U.S. production of this meter stopped after courts ruled that it infringed on existing patents held by Westinghouse.
- Fort Wayne Type K Wattmeter, 1901-1908 - In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used -- and then charge them accordingly. Inventive electrical engineers developed various methods to measure electric power. Induction meters that employed magnetic fields to rotate a disc or cylinder to register energy usage would become the standard. Continued improvements made these wattmeters more compact and reliable.
- 1901-1908
- Collections - Artifact
Fort Wayne Type K Wattmeter, 1901-1908
In the late 1800s, companies that supplied electricity to consumers needed a way to measure how much customers used -- and then charge them accordingly. Inventive electrical engineers developed various methods to measure electric power. Induction meters that employed magnetic fields to rotate a disc or cylinder to register energy usage would become the standard. Continued improvements made these wattmeters more compact and reliable.