 NIST Guide to the SI

ID: nist-guide-to-the-si

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Codex  0 2026-10-31

www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8

Special Publication 811, Appendix B.8, conversion factors. Modern metric equivalents corroborate rounded values; they are distinguished from historical calibrations.

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