Bryan Kibble
Bryan Peter Kibble (10 August 1938 – 28 April 2016), was a British physicist and a pioneering metrologist.
He spent 30 years at the National Physical Laboratory.
He was the inventor of the Kibble balance, an improved version of the current balance, developed for the realisation of the S.I. unit of mass, the kilogramme. Two months after Kibble's death, at a meeting of the Consultative Committee for Units of the C.I.P.M., the watt balance was renamed the Kibble balance to honour its inventor and developer.
See Wikipedia entry.