Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 167,702 pages of information and 247,104 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.
355. GRAHAM, JOHN, High Row, Darlington, Durham — Inventor.
A rule for showing the circumference of a circle when the diameter is given, and vice versa; and for showing also the side of the square equal in area to a circle whose diameter or circumference is given.
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