This picture shows the Kibble balance – the new way to measure the kilogram, as it joins other units in the SI measurement system which are pegged to physical constants
Source:
https://www.newscientist.com/article/2203686-the-kilogram-has-been-transformed-today-as-new-definition-takes-hold/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home