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Roentgen Meter

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An item whose movement is actuated by the flow of electric current in an appropriate circuit and whose scale is calibrated in roentgens or any multiple thereof. It does not include facilities for detecting. It indicates the cumulative amount of radioactivity without reference to time. See also METER, ROENTGEN RATE. For instruments that measure radioactivity directly, see RADIACMETER. View more Roentgen Meter