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Physical Measurement Laboratory

PML is a world leader in the science of measurement. We determine the definitive methods for nearly every kind of measurement employed in commerce and research, provide NIST-traceable calibrations, and disseminate standards and best practices throughout the nation. At the same time, PML works continuously at the outermost frontiers of metrology, devising tools and techniques to meet the ever-changing demands of American industry and science.

News and Updates

Events

2023 NIST Time and Frequency Seminar

Mon, Jul 10 - Wed, Jul 12 2023
NIST Time and Frequency Division's annual seminar covers clocks, oscillators, atomic frequency standards, rf and optical

Awards

Press Coverage

Patents

Contacts

PML Director and Deputy Director

Associate Director for Measurement Services and Associate Director

Executive Secretaries