GUM Guide

InternationalGUM

Description

Specific GUM (Guide to the Expression of Uncertainty in Measurement) publications. Bare "GUM" is accepted and normalised.

Syntax

JCGM identifiers follow: JCGM [Number]:[Year] or JCGM GUM-[Part]:[Year]. The GUM guides use the GUM prefix. Bare "GUM" / "VIM-3" forms are accepted and normalised; partial references (no year) and partial references with a trailing date are supported.

Examples 4

JCGM GUM-1:2022-11-28

JCGM GUM-6:2020

GUM

VIM-3

Components Used

JCGM GUM Guide identifiers are composed of these elements:

Publisher

Enumeration

JCGM

e.g.JCGM

Number

Integer

The guide number

1–3 digit number.

e.g.100

Year

Publication year

4-digit year, preceded by colon.

e.g.2012

Publisher Specific

JCGM publisher info

:publisher

Algebraic Relations

Relations that can involve GUM Guide identifiers:

Relation	Description	Syntax	Example
Amendment	Modifies a JCGM guide	`JCGM [Number]:[Year]/Amd [N]:[Date]`	`JCGM 100:2008/Amd 1:2025-07-25`