252pp, fold-out technical drawing. Cream cloth-covered boards, blue titles on spine. 8vo. Top edges sun-faded, lightly rubbed bottom corners and spine ends. Top text block edge dusty, all edges starting to tan. Internally neat, clean, bright and tight. Dust jacket protected with Brodart-style sleeve, has 1cm close tear top front, light shelf wear, chipping to edges, mirrors book damage, not price clipped.