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 146,023 pages of information and 231,556 images on early companies, their products and the people who designed and built them.

R. L. Ross and Co

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September 1913.
February 1929.
May 1929.

of Premier Works, Stockport

Makers of 'ROSS' pop safety valves

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