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.

All A B C D E G I K L M N O P Q R S T U V W Z

All sources 172 VIM vocabulary 144 Practice & guidance 28

All disciplines 172 Calibration 14 Dimensional 3 General 19 Instruments 39 Mass 2 Pressure 1 Quality & Accreditation 11 Standards & Units 46 Statistics 13 Temperature 2 Uncertainty 22

Target measurement uncertainty

An uncertainty specified in advance as an upper limit, decided from the intended use of the result.

VIM (JCGM 200:2012) 2.34 · Uncertainty

Type A evaluation of measurement uncertainty

Evaluation of a component of uncertainty by statistical analysis of measured values obtained under defined conditions — e.g. the standard deviation of the mean of repeated readings.

VIM (JCGM 200:2012) 2.28 · Uncertainty

Type B evaluation of measurement uncertainty

Evaluation of a component of uncertainty by means other than statistical analysis of current measurements — calibration certificates, specifications, handbook data, assumed distributions.

VIM (JCGM 200:2012) 2.29 · Uncertainty