1963. No edition remarks. 88 pages. No dust jacket. Blue cloth covered boards with gilt. Handbook No.9 in the Engineering Equipment Users' Association series. Pages are moderately tanned and foxed throughout, heavier at end-papers, paste-downs and text-block edges. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Mild crushing to spine ends. Boards are bowed. Book has a slight forward lean. Gilt lettering is bright and clear.