voltage calibrator

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Sound level meter — Type 1 Sound Level Meter (Shown: Svantek 979) Sound level meters measure sound pressure level and are commonly used in noise pollution studies for the quantification of almost any noise, but especially for industrial, environmental and aircraft… … Wikipedia
AEP Meter Label Format — The California Direct Access Standards setting process in 1997 identified the need to standardize the electric meter label identifier so as to create a unique identifier for every electric meter in the United States. The AEP Meter Label Format is … Wikipedia
Measurement microphone calibration — In order to take a scientific measurement with a microphone, its precise sensitivity must be known (in volts per Pascal). Since this may change over the lifetime of the device, it is necessary to regularly calibrate measurement microphones. This… … Wikipedia

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