News and Updates

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Welcome 2026 SURF Fellows

July 14, 2026

The Office of Weights and Measures (OWM) is happy to welcome Dominick Mendez and Yoon Thwel and who are serving as a 2026 Summer Undergraduate Research...

NIST Recognition and Accreditation Services for the State Lab Program

July 14, 2026

NIST recognition and accreditation programs announced in May 2026 the streamlining of services for participants in the NIST Handbook 143 Recognition Program...

2026 International Conference of Weighing

July 13, 2026

David Sefcik and Jan Konijnenburg from the NIST Office of Weights and Measures, together with Leon Chao from the NIST Fundamental Electrical Measurements Group...

New NIST Special Publication 2200 on Cannabis Scale Suitability

July 10, 2026

In the last several years, the sale and use of cannabis products have been legalized in multiple States in the United States. With this legalization comes the...

Measure, Mix, and Learn with NIST Metric Recipes

July 10, 2026

Transform your classroom or home kitchen into a hands-on culinary laboratory by swapping volume cups for a digital scale. NIST Metric Recipes: Measure. Mix...

students in the Vehicle and Axle-load Scale training

OWM Vehicle and Axle-load Scale Training

July 10, 2026

NIST OWM conducted a Vehicle and Axle-load Scales training class from June 22 to 25, 2026, in Frankfort, KY, for twenty-four participants representing 12 state...

Announcing the 2026 OWM “Info Hours” Series

March 6, 2026

The NIST Office of Weights and Measures is pleased to announce the schedule for the 2026 OWM Info Hours series. An Info Hour is a one-hour session that features...

Where Design Meets Science: My NIST PREP Internship

March 5, 2026

My name is Yoon Thwel, and I am a Communication and Graphic Design student at Montgomery College, Rockville, Maryland. In spring 2025, I had an amazing...

OWM Info Hours Update (2025)

July 7, 2025

OWM continues to host a series of Information Hours, or "Info Hours," to feature current weights and measures, laboratory metrology, or documentary standard...

hand holding a cellphone showing four different apps

Legal Metrology Meets the Digital Age

July 7, 2025

The days when a telephone was just a device to make phone calls are long gone. Nowadays, almost everybody has a smartphone with the capability to use it as a...

C-RMAP 2025: “That’s A Wrap!”

July 7, 2025

In early June, over 115 metrologists from state, county, and federal government laboratories gathered with manufacturing and industry laboratory metrologists in...

EVSE Metrology Trainings are a Go!

July 7, 2025

OWM is ramping up a new series of metrology training for the testing and verification of electric vehicle supply equipment (EVSE). This August, in conjunction...

Advanced Mass Metrology alumni (Class of 2023)

Advanced Mass Metrology Training with Guidance on the Kilogram Consensus Value

July 7, 2025

NIST OWM will welcome a full class of students to its Advanced Mass Metrology course at NIST’s Gaithersburg, Maryland campus at the end of this July. This nine...

NIST unit conversion card ruler measures an autumn oak leaf

Classroom-Ready: NIST Releases Updated Metric Ruler and Conversion Card

July 7, 2025

The NIST Metric Program provides a wide range of educational materials to help students learn to apply the International System of Units (SI), commonly known as...

NIST’s Kibble balance: A Mass revolution

June 2, 2025

NIST engineer Leon Chao never dreamed his childhood fascination with LEGOs would fit together with his professional life. But a working LEGO model he and his...

BIPM 150th Anniversary Standout Poster

May 23, 2025

World Metrology Day (20 May 2025) marked the sesquicentennial, or 150th anniversary, of the Meter Convention. NIST and the Office of Weights and Measures (OWM)...

Deception, Trickery, and Metrology

April 30, 2025

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...

OWM Welcomes Undergraduate Researchers

March 27, 2025

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

Legal Metrology: Maintaining Our Trust in Measurements

January 8, 2025

Without realizing it, metrology and its associated standards and services play a big role in our daily lives. We buy groceries that are weighed or measured...

OWM Completes Pilot Test of a “Blended” Course on Retail Motor-Fuel Dispensers

January 7, 2025

In October 2024, NIST OWM completed a pilot test of a “blended” course on Retail Motor-Fuel Dispensers (RMFDs) thanks in large part, to Paul Floyd, Director of...

NIST OWM and KEBS: Building Metrology Capacity for the RMOs

January 7, 2025

NIST Office of Weights and Measures (OWM) and the Kenya Bureau of Standards (KEBS) are currently conducting an interlaboratory mass comparison as part of a...

Map of RMAP regions without state listing

Coming in June 2025: Combined RMAP Training Event in Portland, Oregon

January 7, 2025

Every five years, NIST OWM gears up to host a Combined Regional Measurement Assurance Program (C-RMAP) training event with a state host with all six RMAP...

NVLAP NIST Handbook 150-2 New Release

January 7, 2025

In October 2024, the National Voluntary Laboratory Accreditation Program (NVLAP) released a revised version of NIST Handbook 150-2 , which represents the...

A New ASTM E617 Standard and What It Means for NIST Handbook 105-1

January 7, 2025

One of OWM's main responsibilities is to harmonize international and national documentary standards with those used by the U.S. weights and measures community...

Consumer examining bottle labels in grocery store

Best Practices for Uniform Unit Pricing: An Update to NIST SP 1181 and NIST Handbook 130 Regulations

December 13, 2024

To help shoppers everywhere get the best value for their money, the NIST Office of Weights and Measures (OWM) convened a unit price working group comprised of...

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