Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,859 pages of information and 247,161 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.
1817 A sophisticated dividing/engraving/drilling engine made by James Clark was advertised for sale in London, priced at 400 guineas. It used a worm and wheel, the worm being of 3 inches diameter and apparently of the hourglass type. Described in detail in the advertisement[1]
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