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ITS-90.com, the resource site for temperature scales and temperature. Scales and supplementary information for metrologists, scientists, calibration engineers, and those with an interest in its measurement. Includes uncertainty calculator software for download from the UK.

Agilent's Metrology Forum offers enlightenment to the uninitiated and soul-food for fellow practitioners of the calibration art. Offers enlightenment to the uninitiated and soul-food for practitioners of electrical calibration. Includes standards, accreditation, quality and equipment management articles, maintained by Agilient Technologies, Palo Alto, California.

Metrology Metro is a metric community, providing practical resources that include links, events, jobs, a fun quiz, a discussion forum, and more.. Resources for metrological and calibratory information, both US and SI, including quiz, events, books, jobs and contacts for sponsors and advertisers in Renfrew, Pennsylvania.