on the Springing and Adjusting of Watches: Being a Description of the Balance Spring and the Compensation Balance with Directions for Applying the Spring and Adjusting for Isochronism and Temperature

8vo., blue clothbound hardback gilt; 152pp, indexed, illustrated with 75 black and white text figures. Old bookseller's circular label to corner of front pastedown plus small pencil inscription. Light foxing to edges, tanning to endpapers and prelims, slight edgewear and sunning to boards. A Good+ copy overall.