No edition stated. 320 pages. No dust jacket. Red cloth with gilt titles and decoration to front and spine. Preface dated 1937. Includes various diagrams. Pages have slight foxing, tanning and minor thumbing. Foxing more noticeable towards the start and end of the book. A few dog-eared corners. Boards have some moderate edge wear, with slight bumping to corners and minor bumping to spine ends. Boards a little rubbed and marked overall. A few liquid droplet marks. Spine is noticeably sunned. Gilt is dulled and worn.