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Metrology

Mass metrology

News and Updates

PROSPECT detector diagram

Searching for Sterile Neutrinos

In an effort to solve several fundamental mysteries about the cosmos, physicists have been searching for more than two decades for a proposed elementary...

Blog Posts

A researcher wearing a lab coat uses tongs to place a silvery sphere into a large scientific device as another researcher looks on.

One of the World’s Roundest Objects Is Helping to Build a Better Mass Measurement

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View from the back of a darkened movie theater shows the heads of the audience and a screen reading: Measurement in the Movies.

Measurement in the Movies

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Title card reads "A Scientific Christmas Tale" with the NIST logo in a wreath and flashing holiday lights.

A Scientific Christmas Tale

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Projects and Programs

OWM Laboratory Metrology Training for mass metrology

OWM Training Program: Metrology, Metrication, and More!

Ongoing
OWM offers a variety of in-person, online, and "blended" training classes and materials that provide guidance instruction on national legal metrology standards, weights and measures field inspection procedures, and laws and regulations related to packaging and labeling. OWM provides technical...
NIST-4

Precision Electro-Mechanical Experiments (PREME)

Ongoing
NIST-4 Kibble Balance Previously called ‘the Electronic Kilogram’ Project, a major component of PREME is the realization of SI unit of mass, the kilogram, using the NIST-4 Kibble balance, the fourth generation of Kibble balances at NIST. This is accomplished through a high-accuracy comparison of...

Publications

Estimating How Big: The Metric Estimation Game

Author(s)
Elizabeth Benham, Kristen Dill, Dinelka Jagoda, Maryanne Amanze, Yoon Thwel
The metric system (International System of Units, SI) is easy to use and learn. The Metric System Estimation Game is a fun, hands-on activity that helps...
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