1 The design process and the role of the design model. 1.1 The design process 1.2 The design model 1.3 Types of design model 2 Representing the design model - Engineering Drawing. 2.1 Projections 2.2 Creating Orthographic Projection drawings 2.3 Drawing conventions 2.4 Sections 2.5 Dimensions 2.6 Tolerances, limits ....