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.
Coordinate measuring machine (CMM)
A measuring system with the means to move a probing system and determine spatial coordinates on a workpiece surface; acceptance and reverification tests are specified in the ISO 10360 series.
ISO 10360 series · Dimensional
Gauge block
An end standard of length with flat, parallel measuring faces of known separation, wrung into stacks to realize lengths — grades and requirements per ISO 3650.
ISO 3650:1998 · Dimensional
Thermal expansion (dimensional)
The length change of a body with temperature, characterized by its coefficient of linear expansion. Dimensional results are reported at the standard reference temperature of 20 °C defined by ISO 1.
ISO 1:2022 · Dimensional