JCGM
Joint Committee for Guides in Metrology
The JCGM works to promote and harmonize metrology guidance, maintaining the Guide to the Expression of Uncertainty in Measurement (GUM) and the International Vocabulary of Metrology (VIM). Bare GUM/VIM-3 guide references and partial references with an optional trailing date are accepted.
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Doc Types
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Components
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Relations
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Stages
Document Types 5
Components 4
Structured elements that make up a JCGM identifier:
Publisher
EnumerationJCGM
JCGM
e.g.
JCGMNumber
IntegerThe guide number
1–3 digit number.
e.g.
100Year
YearPublication year
4-digit year, preceded by colon.
e.g.
2012Publisher Specific
JCGM publisher info
:publisherPubID Algebra 1
Relationships between JCGM identifiers:
| Relation | Description | Syntax | Example |
|---|---|---|---|
| Amendment | Modifies a JCGM guide | JCGM [Number]:[Year]/Amd [N]:[Date] | JCGM 100:2008/Amd 1:2025-07-25 |