Grace's Guide

British Industrial History

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,370 pages of information and 230,032 images on early companies, their products and the people who designed and built them.

B. and K. Laboratories

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of Hounslow, Middlesex

connected with Bruel and Kjaer A/S?

1974 Developed a pocket-sized battery personal noise dose meter.[1]

See Also


Sources of Information

  1. The Engineer 1974/05/09