Self-Test C-3.4: Describe Lettering and Dimensioning of Piping Diagrams
Complete Self-Test C-3.4 and check your answers.
Identify each type of line in Figure 1 below by stating:
- its name (visible line, hidden line, centre line, etc.)
- its main use (shows object outline, shows centre of hole, shows location of sections, etc.)

- Line 1
- Line 2
- Line 3
- Line 4
- Line 5
- Line 6
- Line 7
Answer Key: Self-Test C-3.4 is on the other page.