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The Physical Measurement Laboratory (PML) sets the definitive U.S. standards for nearly every kind of measurement employed in commerce and research, sometimes across more than 20 orders of magnitude. PML is also a world leader in the science of measurement, devising procedures and tools that make continual progress possible. For more information, see What We Do.

Director: James Olthoff

Deputy Director: Carl Williams

Associate Director for Measurement Services: Gregory Strouse


General Information:
301-975-4200 Telephone
301-975-3038 Facsimile
100 Bureau Drive, M/S 8400
Gaithersburg, MD 20899-8400

Assistant to Dr. Olthoff:
Anita Sweigert
(301) 975-4200

Assistant to Dr. Williams and Mr. Strouse:
Zulma Lainez
(301) 975-2220