Various authors — The technical educator: an encyclopaedia of technical education. Volumes 3 & 4 combined.

Cassell, Petter & Galpin, 1870. First Edition. Hardcover. Clean hardback tightly bound in black half leather over black cloth with gilt titles, leather has considerable wear and has been neatly repaired at the spine, a small child has practised it's (negligible) drawing skills on the blank front endpaper in pencil - now rubbed out but has left indentation, but otherwise internally unmarked, no inscriptions. 412 + 428 pages, several illustrations on plates (1 in colour), and 100's of engravings in the text, index to the complete work (i.e. 4 volumes) at end. Undated but text references are all 1870 or earlier. Good with No dust jacket as issued.