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 146,041 pages of information and 231,556 images on early companies, their products and the people who designed and built them.

The Engineer 1886/05/07

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Pdf50.jpg 1886 May 07th PDF

  • Contents, p 357.

Main Subjects

  • Construction and Testing of Air-Locks and Shaft-Tubes - L. Brennecke, p 354.

See Also


Sources of Information