Scope and Contents The content of the 1st and 2nd year engineering note-books (laboratory books) of Dr. Russell A. Leather reflect the wide approach in studies which covered mechanical devices, steel structures and electrical technology. The books include graphwork, drawings, and photographs of late-1940s laboratory equipment at Kings Buildings (1948-1949). Photographs feature the 'Riehle' testing machine', the 'Adie' cement testing machine, a torsion testing machine, the 'Ambler' compression machine, the 'Olsen'...