With over 300,000 copies sold, the German CNC-Handbuch is one of the most successful books in the field of NC technology. This success is based in part on its easy-to-understand texts, its good schematic diagrams, its outstanding value for money, and its constant up-to-dateness thanks to the regular appearance of new editions. §The book offers a wealth of product information relating to the machine tool, control and accessories industries, and has become an indispensible companion for NC practitioners. §In the new 11/12 edition, Parts XX have been completely reorganized and revised. In Parts X and X, CNC machines have been given greater weight to reflect their importance in the market. The chapters on grinding and gear cutting have been expanded considerably.§The CNC-Handbuch enjoys the support of the relevant industries. It has been used and recommended for many years as a textbook by chambers of commerce and industry, technical universities, vocational training centers, and by in-plant training programs - with the best of success.