Dennis A. Schwartz Executive Vice President American Design Drafting Association ADDA Certified Drafter ASME Certified Senior Level GD&T Professional Y14.5M-1994 ASME Certified Senior Level GD&T Professional Y14.5-2009 Publisher The Goodheart-Willcox Company, Inc. Tinley Park, IL www.g-w.com Based on ASME Y14.5-2018 Principles and Practices Geometric Dimensioning Tolerancing and 10 t h e d i t i o n David A. Madsen President Madsen Designs Inc. Faculty Emeritus Former Department Chairperson Drafting Technology Autodesk Premier Training Center Clackamas Community College Oregon City, OR Director Emeritus American Design Drafting Association David P. Madsen President Engineering Drafting & Design, Inc. Vice President Madsen Designs Inc. CADD Consultant and Educator Autodesk Developer Network Member American Design Drafting Association Member Mr. Schwartz is GDTP certified by ASME in accordance with the qualifications of ASME Y14.5.2 in the Senior level.