Tech Lines

It is a line that cuts a shape exactly in half.

• Border lines

• Symmetry lines

• Leaders

• Chain lines

2. Thin “cross hatching” lines drawn at a 45° angle.

• Symmetry Lines

• Section lines

• Leaders

• Chain lines

3. It is used when it is desirable to shorten the view of a long part.

• Symmetry Lines

• Long Break lines

• Leaders

• Chain lines

4. Used to show objects that are not hidden but they are simply not in view.

• Extension Lines

• Phantom lines

• Dimension lines

• Leaders

5. It is drawn thick and dark used to represent the visible

• Extension Lines

• Object lines

• Construction lines

• Leaders