After completing this unit, you will be able to:

• Use proper techniques to make freehand sketches.
• Sketch lines, circles, arcs, and ellipses.
• Make sketches of objects in correct proportion.
• Visualize orthographic views of objects and structures. Create orthographic views.
• Identify standard dimensioning practices used on construction drawings.
• Describe the dimensioning methods used for building features on different drawing types.