Editing Calibration (section)

==BIPM Definition==
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 secondary standard) and, in a second step, uses this information to establish a relation for obtaining a measurement result from an indication."<ref name=metrology_terms>''[http://www.bipm.org/utils/common/documents/jcgm/JCGM_200_2008.pdf JCGM 200:2008 International vocabulary of metrology] {{Webarchive|url=https://web.archive.org/web/20191031152041/https://www.bipm.org/utils/common/documents/jcgm/JCGM_200_2008.pdf |archive-url=https://web.archive.org/web/20110110120304/http://www.bipm.org/utils/common/documents/jcgm/JCGM_200_2008.pdf |archive-date=2011-01-10 |url-status=live |date=2019-10-31 }}'' — Basic and general concepts and associated terms (VIM)</ref>
 
This definition states that the calibration process is purely a comparison, but introduces the concept of [[measurement uncertainty]] in relating the accuracies of the device under test and the standard.