![Profile Image](https://pbs.twimg.com/profile_images/645983513712459776/3Q0H2IVF_normal.jpg)
U.S. Commerce Dept. @CommerceGov
In a brightly lit subterranean lab at @NIST sits a room-sized electromechanical machine called the NIST-4 Kibble balance. Discover how NIST researchers have further improved their Kibble balance’s performance. https://t.co/q5sH1eGrEr — PolitiTweet.org