This edition gives students the basic drafting skills required by today's industry. Students learn to visualize in three dimensions, develop and strengthen their technical imagination, and think precisely. With this edition, coverage of CAD has been updated and expanded, and is now integrated into each chapter as appropriate. Commercial methods and materials are put to classroom use so that students are able to make working drawings according to professional pratice, gain experience in actual drafting organization, and learn to care for and control original drawings and prints.