Knowledge
Metrology Dictionary
The complete VIM vocabulary — all numbered concepts of JCGM 200:2012 as faithful paraphrases with clause citations — plus clearly labeled practice terms from the GUM, ILAC, ISO and NIST guidance.
Metrological comparability of measurement results
Comparability of results traceable to the same reference — what shared traceability buys: results that can be meaningfully compared even from different labs and methods.
VIM (JCGM 200:2012) 2.46 · Calibration
Metrological traceability
The property of a result whereby it can be related to a stated reference — usually the SI — through a documented unbroken chain of calibrations, each contributing to the uncertainty.
VIM (JCGM 200:2012) 2.41 · Calibration
Metrological traceability chain
The sequence of standards and calibrations used to relate a result to a stated reference — the concrete path behind a traceability claim.
VIM (JCGM 200:2012) 2.42 · Calibration
Metrological traceability to a measurement unit
Traceability whose stated reference is the definition of a unit through its practical realization — "traceable to the SI" in its precise sense.
VIM (JCGM 200:2012) 2.43 · Calibration