U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Physical Measurement Laboratory

Office of Weights and Measures

News and Updates

Displaying 1 - 25 of 105
World Metrology Day Symposium 2025

BIPM 150th Anniversary Standout Poster

The Office of Weights and Measures (OWM) invites you to celebrate World Metrology Day (20 May 2025) marking the sesquicentennial, or 150th anniversary, of the
fraudulent five-gallon measure

Deception, Trickery, and Metrology

While exploring a box of early 20th century index cards in the NIST archives, I stumbled upon two that starkly illustrated one of NIST's missions – legal
Yoon using Printer

OWM Welcomes Undergraduate Researchers

The Office of Weights and Measures (OWM) welcomes Yoon Thwel, a spring Professional Research Experience Program (PREP) intern and Matthew Kenzinger, a visiting
NIST Office of Weights and Measures Info Hours

2025 NIST OWM “Info Hours” Series

The NIST Office of Weights and Measures (OWM) is pleased to announce the schedule for the 2025 Info Hours series. An Info Hour is a one-hour session that
NVLAP Logo Solid Blue with Colors Below

NVLAP NIST Handbook 150-2 New Release

In October 2024, the National Voluntary Laboratory Accreditation Program (NVLAP) released a revised version of NIST Handbook 150-2 , which represents the
Dinelka Jagada tallies team scores during NIST Metric Est Game.

2024 NIST Internship Reflections

During the summer of 2024, the NIST Physical Measurement Laboratory’s ( PML) Office of Weights and Measures ( OWM) hosted two undergraduate students through the
did you know image

DYK: NIST OWM Fun Facts

DYK: The Office of Weights and Measures (OWM) is the oldest office at NIST? NIST OWM’s principal mandate to “ fix the standard of weights and measures” is
EVSE Program charger image

Update on NIST Activities for EVSE

NIST OWM is striving to assist the weights and measures community meet the new technical challenges and demands of America’s continued transition to E-mobility