viii, 64pp, [8pp] publisher's catalogue; 20 diagrams. Brown cloth-covered boards, black titles on front and spine. 12mo. Lightly rubbed spine ends, quite cocked. Text block edges just starting to tan and fox. Endpapers starting to fox and tan; bookseller's label on front pastedown; previous owner's name on front free endpaper. Otherwise, internally neat, clean, bright and tight. Dust jacket sun-faded, has shelf wear, minor loss and closed tears, chipping to edges, mirrors book damage.
