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 162,258 pages of information and 244,499 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.

The Engineer 1860/02/17

From Graces Guide

Pdf50.jpg 1860 February 17th PDF

Main Subjects

  • C. F. Varley's Improvements in Proving Electric Conductors, p 105. (Illustrated).

See Also

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Sources of Information