Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 148,103 pages of information and 233,633 images on early companies, their products and the people who designed and built them.
John Lang and Sons of Johnstone, nr Glasgow were machine tool manufacturers.
1873 Company founded.
1894 Surfacing and boring Lathe. 
1895 Visit to the works by a party from the Institution of Mechanical Engineers
1911: 12 inch Centre Lathe. 
1916 Private company.
1920 September. Exhibited at the Machine Tool and Engineering Exhibition at Olympia with a number of lathes with their well-known system of variable speed driving by means of expanding pulleys. 
1961 Lathe manufacturers, machine tool makers and engineers. 800 employees.