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.
Deadweight tester
A pressure standard in which known masses acting on a piston of known effective area generate reference pressures — the primary realization of pressure in many calibration laboratories.
Pressure metrology practice · Pressure
Decision rule
A documented rule describing how measurement uncertainty is accounted for when stating conformity with a specified requirement — required by ISO/IEC 17025:2017 when a laboratory reports pass/fail.
ISO/IEC 17025:2017, 3.7 · Quality & Accreditation