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Mass and Force Group

The Group provides traceability for the SI units of mass and force, measurement services, and research in support of the U.S. industry, government, and scientific community.

The group also

  • Provides appropriate leadership and input to embody strong representation of U.S. interests and technology at national, regional, and international standards organizations in the fields of mass and force metrology.
  • Carries out research and development and provides technical support in measurement science, instrumentation design, development, and testing to develop new physical measurement services, new realization of the units, new transfer standards, new methods and data, custom tests, and consulting for mass and force metrology to improve NIST capabilities for accomplishing the first two items above to meet the needs and demands of U.S. industry, government, and the scientific community and to improve public health and welfare.
  • Provides technical support for legal metrology and to assist industry with the characterization of force transducers used in discrete parts manufacturing. deadweight machine images

News and Updates

Universe in the Balance

Researchers at the National Institute of Standards and Technology (NIST) have found a way to link measurements made by a

Industry Impacts

Massive Forces for Heavy Industry

Measuring large forces, such as the thrust of a rocket engine or the deflection of an aircraft wing, requires well-calibrated force sensors. NIST’s unique

Projects and Programs


The Design and Development of a Tabletop Kibble Balance at NIST

Leon S. Chao, Frank C. Seifert, Darine El Haddad, Stephan Schlamminger
A global paradigm shift to redefine the International System of Units (SI) from a system based on seven fundamental units to seven fundamental constants is well


Group Leader