Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 143,425 pages of information and 230,044 images on early companies, their products and the people who designed and built them.
F. W. Portass, 83a Sellers Street, Sheffield.
Portass Lathe and Machine Tool Co of Sheffield.
Makers of machine tools including the cheap model maker's 'Adept' lathe.