Rex Miller, professor Emeritus of Industrial Technology at State University of New York, College at Buffalo, has taught technical courses on all levels from high school through graduate school for over 40 years. Dr. Miller is author or co-author of over 100 textbooks and a like number of magazine articles. His books include McGraw-Hill's Carpentry and Construction, Electricity and Electronics for HVAC and Industrial Electricity and Electric Motor Controls. Mark R. Miller is a Professor and Coordinator of Industrial Technology at the University of Texas at Tyler. Dr. Miller is the author or co-author of more than 40 textbooks for trade and technical programs, including: McGraw-Hill's Electricity and Electronics for HVAC, the bestselling Carpentry and Construction, 6th edition, and Miller's Guide to Home Plumbing.