Electric Meter
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| − | '''This article is a stub. Please help expand the article by using the edit tab.''' [[Image:Shallenberger wattmeter 1106.jpg|thumb|center|Shallenberger Watt-Meter]] On 14 August 1888 in Pittsburgh, Pennsylvania, Oliver B. Shallenberger received a patent for the watt-hour meter, a device that measured the amount of AC current and made possible the business model of the electric utility. | + | '''This article is a stub. Please help expand the article by using the edit tab.''' [[Image:Shallenberger wattmeter 1106.jpg|thumb|center|Shallenberger Watt-Meter]] On 14 August 1888 in Pittsburgh, Pennsylvania, Oliver B. Shallenberger received a patent for the watt-hour meter, a device that measured the amount of AC current and made possible the business model of the electric utility. |
| − | [[Category:Components,_circuits,_devices_& | + | [[Category:Components,_circuits,_devices_&_systems]] |
| + | [[Category:Measurement]] | ||
| + | [[Category:Electric_variables_measurement]] | ||
Latest revision as of 16:06, 12 January 2012
This article is a stub. Please help expand the article by using the edit tab.
