Drawing Problems - Chapter 6 Copyright Goodheart-Willcox Co., Inc. Chapter 6 Model Extrusions and Revolutions 149 6. Mechanical 7. Mechanical ∅ 28.1 28.0 6 60° × A A SECTION -A A ∅ 0.2 0 6 6 × ∅ 80 100 60.25 60.0 +0.2 0 4 4 × ∅ 40.2 40.0 2 × ∅ 30 20 10 30° Nozzle Hub