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NIST provides calibration services for force-measuring instruments by applying known forces, compression, tension or both, to the elastic transducer and
The NIST Mass and Force Group disseminates the unit of mass, the kilogram, to the US measurement system through calibrations of customer weights and weight sets
The Dynamic Mechanical Metrology Project develops methods to provide accuracy in, and provides calibration services for, acoustic, vibration, acceleration, and
As part of a revised SI system of units adopted in 2019, the kilogram was redefined to be realized in terms of Planck's constant. By experimental necessity
Since the inception of the SI system of units, physical mass artifacts have been disseminated in order to realize the unit of the kilogram, essential to a broad
Physical disassembly of the 4.45 MN (1,000,000 lbf) deadweight machine (DWM) began in FY15 in order to address material galling that developed in key structural
The small mass and force metrology project at NIST leverages the redefinition of the International System of Units (SI) to scale mass and force with electrical