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2. Northern Tool - Wikipedia

   en.wikipedia.org/wiki/Northern_Tool

   Northern Tool + Equipment (commonly referred to as Northern Tool) is a manufacturer and retailer of light industrial equipment and do-it-yourself supplies.Founded in 1981 as Northern Hydraulics, the company was officially renamed to Northern Tool + Equipment and is the owner of several private label brands including NorthStar, Powerhorse, Klutch, Strongway, Ultra-Tow, Roughneck, Gravel Gear ...

3. Calibration - Wikipedia

   en.wikipedia.org/wiki/Calibration

   The formal definition of calibration by the International Bureau of Weights and Measures (BIPM) is the following: "Operation that, under specified conditions, in a first step, establishes a relation between the quantity values with measurement uncertainties provided by measurement standards and corresponding indications with associated measurement uncertainties (of the calibrated instrument or ...

4. Fluke Corporation - Wikipedia

   en.wikipedia.org/wiki/Fluke_Corporation

   Website. www.fluke.com. Fluke Corporation is an American manufacturer of industrial test, measurement, and diagnostic equipment, including electronic test equipment. It was started in 1948 by John Fluke while he was employed at General Electric.

5. Precision measurement equipment laboratory - Wikipedia

   en.wikipedia.org/wiki/Precision_Measurement...

   Precision measurement equipment laboratory. A Precision Measurement Equipment Laboratory (PMEL) is a United States Air Force (USAF) facility in which the calibration and repair of test equipment takes place. This practice is also known as metrology: the science of measurement.

6. Measurement microphone calibration - Wikipedia

   en.wikipedia.org/wiki/Measurement_microphone...

   Calibration using pistonphones and sound calibrators. A pistonphone is an acoustical calibrator (sound source) that uses a closed coupling volume to generate a precise sound pressure for the calibration of measurement microphones. The principle relies on a piston mechanically driven to move at a specified cyclic rate, pushing on a fixed volume ...

7. Radiometric calibration - Wikipedia

   en.wikipedia.org/wiki/Radiometric_calibration

   Radiometric calibration. Radiometric calibration is a general term used in science and technology for any set of calibration techniques in support of the measurement of electromagnetic radiation and atomic particle radiation. These can be for instance, in the field of radiometry or the measurement of ionising radiation radiated from a source.