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2. Certified reference materials - Wikipedia

   en.wikipedia.org/wiki/Certified_reference_materials

   Certified reference materials (CRMs) are 'controls' or standards used to check the quality and metrological traceability of products, to validate analytical measurement methods, or for the calibration of instruments. [1] A certified reference material is a particular form of measurement standard. Reference materials are particularly important ...

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. Standard (metrology) - Wikipedia

   en.wikipedia.org/wiki/Standard_(metrology)

   The international prototype of the kilogram (IPK) is an artefact or prototype that was defined to have a mass of exactly one kilogram.. In metrology (the science of measurement), a standard (or etalon) is an object, system, or experiment that bears a defined relationship to a unit of measurement of a physical quantity. [1]

5. Jefferson Milling Company awarded Excellence in ... - AOL

   www.aol.com/jefferson-milling-company-awarded...

   Aug. 16—JEFFERSON — Roger Beckwith of the Jefferson Milling Company got a surprise Tuesday morning when County Auditor David Thomas and the Auditor's Certified Weights and Measures staff ...

6. National Institute of Standards and Technology - Wikipedia

   en.wikipedia.org/wiki/National_Institute_of...

   The Articles of Confederation, ratified by the colonies in 1781, provided: . The United States in Congress assembled shall also have the sole and exclusive right and power of regulating the alloy and value of coin struck by their own authority, or by that of the respective states—fixing the standards of weights and measures throughout the United States.

7. National Conference on Weights and Measures - Wikipedia

   en.wikipedia.org/wiki/National_Conference_on...

   The National Conference on Weights and Measures (NCWM) emerged from this effort to bring stakeholders together. With the exception of 11 years, annual meetings have been held every year since. From 1905 to 1957, the Director of the National Bureau of Standards served as the Chairman of NCWM.