Office of Weights and Measures

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<source srcset="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/300w_x_180h/public/images/2023/01/06/EV%20chargers.webp?itok=6TC02fsw 1x, /web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/600w_x_360h/public/images/2023/01/06/EV%20chargers.webp?itok=gP9vJEaf 2x" media="(min-width: 0px)" type="image/webp" width="300" height="180"/> <source srcset="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/600w_x_360h/public/images/2023/01/06/EV%20chargers.jpg?itok=gP9vJEaf 1x, /web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/1200w_x_720h/public/images/2023/01/06/EV%20chargers.jpg?itok=1Cv7N48- 2x" media="(min-width: 480px)" type="image/jpeg" width="600" height="360"/> <source srcset="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/300w_x_180h/public/images/2023/01/06/EV%20chargers.jpg?itok=6TC02fsw 1x, 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type="image/webp" width="300" height="180"/> <source srcset="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/600w_x_360h/public/images/2023/02/28/weights%20and%20measures%20week%202023%20graphic.png?itok=Y_6N1mrU 1x, /web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/1200w_x_720h/public/images/2023/02/28/weights%20and%20measures%20week%202023%20graphic.png?itok=pAn5VaBt 2x" media="(min-width: 480px)" type="image/png" width="600" height="360"/> <source srcset="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/300w_x_180h/public/images/2023/02/28/weights%20and%20measures%20week%202023%20graphic.png?itok=mISZYZxR 1x, /web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/600w_x_360h/public/images/2023/02/28/weights%20and%20measures%20week%202023%20graphic.png?itok=Y_6N1mrU 2x" media="(min-width: 0px)" type="image/png" width="300" height="180"/> <img loading="eager" src="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/600w_x_360h/public/images/2023/02/28/weights%20and%20measures%20week%202023%20graphic.png?itok=Y_6N1mrU" width="600" height="360" alt="Graphic with text that reads "Weights and Measures" and shows fish at a seafood counter, a bag of mulch, a grocery checkout, and a gas pump. Color scheme is orange and purple. " typeof="foaf:Image"/> </picture> </a> </div> <div class="nist-hero__caption"> <a href="/web/20230314214434/https://www.nist.gov/blogs/taking-measure/4-places-weights-and-measures-help-you-get-what-you-pay"> <div class="text">4 Places Weights and Measures Help You Get What You Pay For</div> </a> </div> </div> </div> </div> </div> <div class="nist-content-row nist-content-row--width-legible paragraph paragraph--type--text paragraph--view-mode--default"> <div class="nist-block text-long"><div class="OutlineElement Ltr SCXW216710491 BCX2"> <div class="OutlineElement Ltr SCXW115286206 BCX2"> <p class="Paragraph SCXW115286206 BCX2">The NIST Office of Weights and Measures (OWM) works to ensure that consumers get what they pay for, and sellers get fair payment for the goods and services they sell, by promoting a uniform and technically sound system of weights and measures. This, in turn, promotes consumer confidence and helps ensure fair competition for U.S. commerce that spans from local business operations to a global scale.</p> <p class="Paragraph SCXW204495698 BCX2">Our <a data-entity-substitution="canonical" data-entity-type="node" data-entity-uuid="991be16d-773a-4fdc-9b57-9ed48a49dc70" href="/web/20230314214434/https://www.nist.gov/pml/owm/our-staff" title="OWM Staff">OWM Staff</a> work with a range of industry sectors -- such as the retail sales, petroleum and chemical products, and transportation, including emerging commercial market sectors such as charging of electric vehicles and e-commerce. We also work closely with our Customers and Stakeholders, including international and national standards development organizations, Federal agencies, State laboratory and regulatory officials, and metric program educators. OWM’s Products and Services include technical guidance related to weights and measures applications, legal metrology documentary standards, promotion of the metric system, SI use and traceability, and training for industry, State laboratory metrologists, and weights and measures officials.</p> <div class="OutlineElement Ltr SCXW194125759 BCX2"> <p class="Paragraph SCXW204495698 BCX2"><span lang="EN-US" xml:lang="EN-US"><span>Click here for </span></span><strong><span lang="EN-US" xml:lang="EN-US"><span>FAQs <em>(Coming Soon)</em></span></span></strong></p> <p class="Paragraph SCXW204495698 BCX2"><span lang="EN-US" xml:lang="EN-US"><span>Click </span><span>here to l</span><span>earn more </span></span><a data-entity-substitution="canonical" data-entity-type="node" data-entity-uuid="59dcbc3d-d5dd-4535-bb40-c3935f4652b8" href="/web/20230314214434/https://www.nist.gov/pml/owm/about-us" title="About OWM"><span lang="EN-US" xml:lang="EN-US"><span>A</span><span>bout </span><span>Us</span></span></a></p> </div> </div> <div class="OutlineElement Ltr SCXW115286206 BCX2"> <div class="OutlineElement Ltr SCXW204495698 BCX2"> <div class="nist-callout"> <p><strong>Originally established in 1836 as the “Office of Construction of Standard Weights and Measures”, OWM also remains the oldest office at NIST. For more information, see <a data-entity-substitution="canonical" data-entity-type="node" data-entity-uuid="fa1e8786-3546-4cbb-8083-e3d8ca00a4d7" href="/web/20230314214434/https://www.nist.gov/pml/owm/brief-history-owm" title="A Brief History of OWM">A Brief History of OWM</a>.</strong></p> </div> </div> </div> </div></div> </div> <div class="paragraph paragraph--type--dynamic-content-list-ou paragraph--view-mode--default"> <div class="nist-block "> <h2 class="nist-block__title"> <div class="string">News and Updates</div> </h2> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-1de7f3a8874982fbfac7d6b8a56dd7baa630b1e4431d28819be2937bb3574b1d"> <div> <article role="article" about="/news-events/news/2023/01/evse-fast-charging-network-challenges-calibration-and-traceability" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230314214434/https://www.nist.gov/news-events/news/2023/01/evse-fast-charging-network-challenges-calibration-and-traceability" hreflang="en"><img src="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/01/06/EV%20chargers.jpg?itok=uTD8J507" width="100" height="67" alt="EV chargers on the side of a road" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230314214434/https://www.nist.gov/news-events/news/2023/01/evse-fast-charging-network-challenges-calibration-and-traceability"><span property="schema:name">EVSE Fast Charging Network: Challenges for Calibration and Traceability</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-01-07T12:00:00Z">January 7, 2023</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary">The new year 2023 brings accelerated expansion of a nationwide network of electric vehicle supply equipment (EVSE), supported by the U.S. Department of Energy</div> </div> </div> </article> </div> <div> <article role="article" about="/news-events/news/2023/01/new-years-eve-2023-marked-retirement-us-survey-foot" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230314214434/https://www.nist.gov/news-events/news/2023/01/new-years-eve-2023-marked-retirement-us-survey-foot" hreflang="en"><img src="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/01/04/us-survey-foot-obsolete.png?itok=cuShJoNn" width="100" height="100" alt="U.S. Survey Foot is obsolete" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230314214434/https://www.nist.gov/news-events/news/2023/01/new-years-eve-2023-marked-retirement-us-survey-foot"><span property="schema:name">New Year’s Eve 2023 Marked the Retirement of the U.S. Survey Foot</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-01-06T12:00:00Z">January 6, 2023</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary">At the stroke of midnight on January 1, 2023, the U.S. survey foot was deemed obsolete and the international foot (i.e., 1 foot = 0.3048 meter exactly)</div> </div> </div> </article> </div> <div> <article role="article" about="/news-events/news/2023/01/nist-office-weights-and-measures-national-voluntary-laboratory" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230314214434/https://www.nist.gov/news-events/news/2023/01/nist-office-weights-and-measures-national-voluntary-laboratory" hreflang="en"><img src="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/01/06/NVLP%20Staff.jpg?itok=Q9zvClHW" width="100" height="100" alt="Kari Harper and Robert Knake" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230314214434/https://www.nist.gov/news-events/news/2023/01/nist-office-weights-and-measures-national-voluntary-laboratory"><span property="schema:name">NIST Office of Weights and Measures – National Voluntary Laboratory Accreditation Program Partnership: New Faces and New Opportunities</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-01-05T12:00:00Z">January 5, 2023</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary">The NIST Office of Weights and Measures (OWM) has long coordinated the accreditation of the State legal metrology laboratories through the OWM Recognition</div> </div> </div> </article> </div> <div> <article role="article" about="/news-events/news/2023/01/si-prefix-progress" typeof="schema:Article" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230314214434/https://www.nist.gov/news-events/news/2023/01/si-prefix-progress" hreflang="en"><img src="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/01/06/SI%20Brochure-Quote.png?itok=1HtXLKpK" width="100" height="51" alt=""The SI is not a static convention, but evolves following developments in the science of measurement" BIPM SI Brochure (9th Edition)" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230314214434/https://www.nist.gov/news-events/news/2023/01/si-prefix-progress"><span property="schema:name">SI Prefix Progress</span> </a></h3> <div class="nist-teaser__date"> <div class="daterange"><time datetime="2023-01-04T12:00:00Z">January 4, 2023</time> </div> </div> </header> <div class="nist-teaser__content"> <div property="schema:text" class="text-with-summary">In December 2022, the BIPM SI Brochure (9th Edition, December 2022, V2.01) was published to include the four new International System of Units (SI) prefixes</div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20230314214434/https://www.nist.gov/news-events/news-updates/org/6436">View All News and Updates</a></div> </footer> </div> </div> </div> </div> </div> <div class="paragraph paragraph--type--dynamic-content-list-ou paragraph--view-mode--default"> <div class="nist-block "> <h2 class="nist-block__title"> <div class="string">Projects and Programs</div> </h2> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-747b17c82d4bca495f3de4bb71490b035f1e1b8cae71dcb56fe53a0c321eefc9"> <div> <article role="article" about="/programs-projects/electric-vehicle-supply-equipment-evse-test-instrumentation-guidance-documentation" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230314214434/https://www.nist.gov/programs-projects/electric-vehicle-supply-equipment-evse-test-instrumentation-guidance-documentation" hreflang="en"><img src="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2023/01/06/EV%20chargers.jpg?itok=uTD8J507" width="100" height="67" alt="EV chargers on the side of a road" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230314214434/https://www.nist.gov/programs-projects/electric-vehicle-supply-equipment-evse-test-instrumentation-guidance-documentation"><span>Electric Vehicle Supply Equipment (EVSE) Test Instrumentation: Guidance Documentation</span> </a></h3> <div class="nist-teaser__type"> <div class="nist-badge display-inline-block margin-y-1 nist-badge--blue boolean">Ongoing</div> </div> </header> <div class="nist-teaser__content"> <div class="text-long"> The NIST Office of Weights and Measures (OWM) will begin work on developing a guideline document assessing methods for establishing traceability to primary SI </div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20230314214434/https://www.nist.gov/laboratories/projects-programs/org/6436">View All Projects/Programs</a></div> </footer> </div> </div> </div> </div> </div> <div class="paragraph paragraph--type--dynamic-content-list-ou paragraph--view-mode--default"> <div class="nist-block "> <h2 class="nist-block__title"> <div class="string">Events</div> </h2> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-2464295a64c19f5ea5437fbeb6fc01ae272fa7f0d79e88fc1ff1e7420f442487"> <div> <article role="article" about="/news-events/events/2023/03/5835-southeast-measurement-assurance-program-semap" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230314214434/https://www.nist.gov/news-events/events/2023/03/5835-southeast-measurement-assurance-program-semap"><span>5835 Southeast Measurement Assurance Program, SEMAP</span> </a></h3> <div class="nist-teaser__date"> <div class="smartdate">Mon, Mar 27 - Thu, Mar 30 2023</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary">NIST Handbook 143, Program Handbook (2019) details the criteria used for OWM Laboratory Recognition. NIST Handbook 143</div> </div> </div> </article> </div> <div> <article role="article" about="/news-events/events/2023/04/5841-mass-metrology-seminar" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230314214434/https://www.nist.gov/news-events/events/2023/04/5841-mass-metrology-seminar"><span>5841 Mass Metrology Seminar</span> </a></h3> <div class="nist-teaser__date"> <div class="smartdate">Mon, Apr 10 - Fri, Apr 21 2023</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary">The Mass Metrology Seminar is a two-week, "hands-on" seminar. It incorporates approximately 30 percent lectures and 70</div> </div> </div> </article> </div> <div> <article role="article" about="/news-events/events/2023/04/5864-lpg-propane-verifying-net-contents-20-lb-cylinders-part-1" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230314214434/https://www.nist.gov/news-events/events/2023/04/5864-lpg-propane-verifying-net-contents-20-lb-cylinders-part-1" hreflang="en"><img src="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2022/01/24/NC%20Refill%20LPG_0.jpg?itok=8sjCJIMc" width="100" height="76" alt="Photo of a NC Inspector at an LPG Direct Sale Refilling Station" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230314214434/https://www.nist.gov/news-events/events/2023/04/5864-lpg-propane-verifying-net-contents-20-lb-cylinders-part-1"><span>5864 LPG (Propane) -Verifying the Net Contents of 20 lb Cylinders (Part 1)</span> </a></h3> <div class="nist-teaser__date"> <div class="smartdate">Wed, Apr 19 2023, 10:00am - 3:00pm EDT</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary">PART 1 "Exchange Locations and Vending Machines" This 5-hour webinar will include a morning and afternoon session, with</div> </div> </div> </article> </div> <div> <article role="article" about="/news-events/events/2023/04/5863-nist-handbook-133-overview-handbook-133" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230314214434/https://www.nist.gov/news-events/events/2023/04/5863-nist-handbook-133-overview-handbook-133"><span>5863 NIST Handbook 133 - Overview of Handbook 133</span> </a></h3> <div class="nist-teaser__date"> <div class="smartdate">Thu, Apr 20 2023, 11:00am - 1:30pm EDT</div> </div> </header> <div class="nist-teaser__content"> <div class="text-with-summary">This 2.5 hour webinar provides a complete overview of NIST Handbook 133, "Checking the Net Contents of Packaged Goods"</div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20230314214434/https://www.nist.gov/news-events/upcoming-events/org/6436">View All Events</a></div> </footer> </div> </div> </div> </div> </div> <div class="paragraph paragraph--type--dynamic-content-list-ou paragraph--view-mode--default"> <div class="nist-block "> <h2 class="nist-block__title"> <div class="string">Awards</div> </h2> <div class="viewsreference"><div class="views-element-container"><div class="js-view-dom-id-af454ccc3ad7fcb268cc259197a378a69dc0171b5a58822baeb499f71148bf7d"> <div> <article role="article" about="/awards/elizabeth-j-benham-recognized-ieee-standards-association" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230314214434/https://www.nist.gov/awards/elizabeth-j-benham-recognized-ieee-standards-association" hreflang="en"><img src="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2021/04/07/Elizabeth%20Benham%202021-03.jpg?itok=7FfNmdfA" width="80" height="100" alt="Staff Photo Elizabeth Benham" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230314214434/https://www.nist.gov/awards/elizabeth-j-benham-recognized-ieee-standards-association"><span>Elizabeth J. Benham Recognized by the IEEE Standards Association</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-long">The IEEE Standards Association is an organization focused on advancing global technologies through the Institute of Electrical and</div> </div> </div> </article> </div> <div> <article role="article" about="/awards/2021-usma-fellow-elizabeth-benham" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230314214434/https://www.nist.gov/awards/2021-usma-fellow-elizabeth-benham" hreflang="en"><img src="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/2021/04/07/Elizabeth%20Benham%202021-03.jpg?itok=7FfNmdfA" width="80" height="100" alt="Staff Photo Elizabeth Benham" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230314214434/https://www.nist.gov/awards/2021-usma-fellow-elizabeth-benham"><span>2021 USMA Fellow - Elizabeth Benham</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-long">For going above and beyond in helping to advance U.S. Metric Association’s (USMA) goal of "completing the US conversion to the International</div> </div> </div> </article> </div> <div> <article role="article" about="/nist-awards/2020-bronze-medal-award-tina-gaver-butcher-lisa-warfield-juana-williams" class="nist-teaser"> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230314214434/https://www.nist.gov/nist-awards/2020-bronze-medal-award-tina-gaver-butcher-lisa-warfield-juana-williams"><span>2020 - Bronze Medal Award---Tina Gaver Butcher, Lisa Warfield, Juana Williams</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="string-long">For leadership in developing uniform legal metrology requirements for electric vehicle charging and submetering adopted by the 50 states in 2019.</div> </div> </div> </article> </div> <div> <article role="article" about="/awards/2020-oiml-letter-appreciation-ralph-richter" class="nist-teaser"> <div class="nist-teaser__image"> <div class="entity-reference"> <a href="/web/20230314214434/https://www.nist.gov/awards/2020-oiml-letter-appreciation-ralph-richter" hreflang="en"><img src="/web/20230314214434im_/https://www.nist.gov/sites/default/files/styles/thumbnail/public/images/annual_award/bronze20-20richter20ralph000_0.jpg?itok=uF780QEd" width="100" height="75" alt="Richter" loading="lazy" typeof="foaf:Image"/> </a> </div> </div> <div class="nist-teaser__content-wrapper"> <header> <h3 class="nist-teaser__title"><a href="/web/20230314214434/https://www.nist.gov/awards/2020-oiml-letter-appreciation-ralph-richter"><span>2020 OIML Letter of Appreciation – Ralph Richter</span> </a></h3> </header> <div class="nist-teaser__content"> <div class="text-long">This International Organization of Legal Metrology (OIML) Letter of Appreciation recognizes Ralph Richter for his outstanding contribution</div> </div> </div> </article> </div> <footer> <div class="link-list"><a href="/web/20230314214434/https://www.nist.gov/awards/org/6436">View All Awards</a></div> </footer> </div> </div> </div> </div> </div> </div> </div> </div> </div> <div class="grid-container"> <div class="nist-page__region nist-page__region--content-bottom"> <div class="nist-block nist-block--contact"> <h2 class="nist-block__title">Contacts</h2> <div class="nist-contact"> <h3 class="nist-contact__heading">General Inquiries:</h3> <ul class="nist-contact__items"> <li class="nist-contact__item"> <div class="nist-contact__name"> OWM </div> <div> <a href="https://web.archive.org/web/20230314214434/mailto:owm@nist.gov">owm@nist.gov</a> </div> <div> </div> </li> </ul> </div> <div class="nist-contact"> <h3 class="nist-contact__heading">Training Inquiries</h3> <ul class="nist-contact__items"> 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