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  2. Oliver B. Shallenberger - Wikipedia

    en.wikipedia.org/wiki/Oliver_B._Shallenberger

    The meter sold 120,000 units within ten years. It enabled billing by the ampere hour, combining measures of current and charge. "Coulomb motor meters" are those that measure electric quantity used. Therefore, power companies that used Shallenberger's meters charged by the energy consumed. [17]

  3. Hermann Aron - Wikipedia

    en.wikipedia.org/wiki/Hermann_Aron

    Dr Aron's pendulum meter, as sold in Great Britain by GEC, from 1888. One pendulum bob is labeled as "B". The meter could be used only for direct current. Hermann Aron's grave in Weissensee (Berlin) Hermann Aron (; 1 October 1845 – 29 August 1913) was a German researcher of electrical engineering. Specimen of Aron's pendulum meter

  4. Hour record (recumbents) - Wikipedia

    en.wikipedia.org/wiki/Hour_record_(recumbents)

    The record hour average speeds for these machines – 90 km/h (56 mph) for men and 84 km/h (52 mph) for women – are faster than a UCI rider could perform even in a short 200-meter sprint for 10 seconds, 72 km/h (45 mph), demonstrating their higher level of efficiency and speed.

  5. Hobbs meter - Wikipedia

    en.wikipedia.org/wiki/Hobbs_meter

    A Hobbs Meter made by General Electric about 1970. Hobbs meter is a generic trademark for devices used in aviation to measure the time that an aircraft is in use. The meters typically display hours and tenths of an hour, but there are several ways in which the meter may be activated: It can measure the time that the electrical system is on.

  6. Hour record - Wikipedia

    en.wikipedia.org/wiki/Hour_record

    The hour record is the record for the longest distance cycled in one hour on a bicycle from a stationary start. Cyclists attempt this record alone on the track without other competitors present. Cyclists attempt this record alone on the track without other competitors present.

  7. Electricity meter - Wikipedia

    en.wikipedia.org/wiki/Electricity_meter

    An electricity meter, electric meter, electrical meter, energy meter, or kilowatt-hour meter is a device that measures the amount of electric energy consumed by a residence, a business, or an electrically powered device over a time interval. Electric utilities use electric meters installed at customers' premises for billing and monitoring purposes.