A curated monthly overview of international metrology events, meetings, and updates from BIPM, EURAMET, OIML, WELMEC, and beyond.
In this issue:
• The 28th CGPM met in Versailles on 13-15 October and adopted seven resolutions on the future definition of the second, UTC continuity, digital transformation, and lunar reference time.
• Nigeria signed the CIPM Mutual Recognition Arrangement, strengthening its participation in international measurement comparisons.
• Delegates elected 18 members to the International Committee for Weights and Measures (CIPM).
• OIML’s 61st CIML meeting took place in New Delhi on 26-28 October.
• WELMEC’s Working Group 6 met in Paris on 14-15 October, and Working Group 14 on Digital Transformation met online on 20 October.
• EURAMET’s October updates covered EV-charging measurement, cancer genomics, radiation protection, nanoscale measurement, and environmental sensor networks.
• NIST reported radio-frequency fingerprinting research that distinguished 16 tested devices with more than 95% accuracy.

Spotlight this month: The CGPM advanced work toward a proposal for a future definition of the second for its 2030 meeting and recommended further international cooperation on lunar reference time linked to UTC. No new definition of the second or final lunar time standard was adopted in October.

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