Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 135,180 pages of information and 215,290 images on early companies, their products and the people who designed and built them.
of Triumph Works, Keetons Hill, Sheffield.
of Castle Road, Goodmayes, Ilford.
One of the founders was Dickie Watts who in 1924 patented the Synchro Balance Engine which was built by Blackstone and Co
1907 Introduced an oil engine
1911 Issued catalogue on the Watts portable boring machine. 
1937 Woodworking machinery.