Question:

In what frequency does the JCGM release updates to its measurement guidance documents?

Answer:

The JCGM operates through two working groups: JCGM-WG1, which focuses on the Guide to the Expression of Uncertainty in Measurement (GUM), and JCGM-WG2, which deals with the International Vocabulary of Metrology (VIM). These groups are tasked with the regular review and enhancement of these documents to keep them current with the latest developments in metrology.

Historically, major updates to documents such as the GUM and VIM have not followed a strict periodic schedule. Instead, revisions are made as needed, often prompted by advancements in measurement science, changes in technology, or feedback from the metrology community. For instance, significant updates to the GUM have been released in years like 2020 and 2023.

In addition to these major revisions, the JCGM also holds regular meetings to discuss potential updates, improvements, and the future direction of metrological guides. These meetings can result in minor amendments and clarifications to existing documents, ensuring their relevance and utility are maintained.

To summarize, the JCGM does not update its measurement guides on a fixed schedule. Updates are made when necessary, driven by the evolving needs of the metrology community and the state of the science. Stakeholders in the field of metrology are encouraged to stay informed by regularly checking the JCGM’s official publications and announcements for the latest updates.