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

Base quantity

A quantity in a conventionally chosen subset of a system of quantities in which no member can be expressed in terms of the others.

VIM (JCGM 200:2012) 1.4 · Standards & Units

Base unit

A measurement unit adopted by convention for a base quantity — in the SI: second, metre, kilogram, ampere, kelvin, mole, candela.

VIM (JCGM 200:2012) 1.10 · Standards & Units