Grace's Guide To British Industrial History

Registered UK Charity (No. 115342)

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 162,358 pages of information and 244,505 images on early companies, their products and the people who designed and built them.

Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 147,919 pages of information and 233,587 images on early companies, their products and the people who designed and built them.

Denny-Johnson

From Graces Guide
Revision as of 17:24, 26 September 2012 by PaulF (talk | contribs)

Type of torsion meter for measuring the output of marine engines

1908 Described in an article in The Engineer [1]

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Sources of Information