Reprint. vi, 360pp, with black and white plate illustrations, and drawings and technical designs etc in text. Blue cloth-covered boards, silver-stamped lettering front and spine. 8vo. Cloth has some minor marks, gently rubbed and rounded at corners and spine ends. Text block edges a little toned. Bookseller's ticket on lightly soiled and marked endpapers else internally neat, clean, bright and tight. In its original paper dust jacket, worn and torn, a little faded and sunned over spine, rubbed on corners and spine ends, with flap at head of spine.