The National Institute of Standards and Technology, or NIST, offers a striking catalog of reference materials that includes peanut butter, New Jersey soil, domestic sludge, Lake Michigan fish tissue, and Spam. These materials turn out to illuminate the fascinating process by which measurement standards are defined in terms of fundamental physical constants and then handed down by NIST as artifacts that anyone can use to calibrate a bathroom scale or detect impurities in molybdenum oxide. Visit http://bit.ly/nistsrm for full episode notes and links. And visit https://www.thedigitalfactory.com/ to learn more about The Digital Factory Conference, returning to Boston on May 7, 2019. Dayna Grayson will speak along with CEOs, CTOs, and CIOs who are transforming their businesses through manufacturing.