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James Watt's Sculpture copying machinery (eidograph), taken at Watt's residence, Heathfield Hall, Handsworth, later owned by George Tangye. Date: circa 1809
Letter from William Prime Marshall to Walter Raleigh BrowneLetter, 7 Dec 1883 from William Prime Marshall to Walter Raleigh Browne accompanying an explanation of James Watts Sculpture copying machinery (eidograph) - see BAW/14/001-2. Date: circa 1809
James Watts Sculpture copying machinery (eidograph)Page 1 of explanation about James Watts Sculpture copying machinery (eidograph), including a sketch of the valves (BAW/14/032) and marked-up photograph (BAW/14/003) which the the note refers to