Types & Uses of Lines

In this topic, you will learn about the types of lines used in engineering drawing.

	Type of Line	Uses
1.	Thick continuous line	- Used for visible outlines and edges
2.	Thin continuous line	- Used for dimension lines - Used for construction lines - Used for hatching lines - Used for projection and outlines - Intersections
3.	Thin short dashes	- For showing hidden outlines and edges
4.	Thin chain line	- For center lines and extreme positions of moveable points
5.	Thick chain line	- For indicating surfaces which must be of special requirement
6.	Thin ruled line with short zigzags	- For long break lines
7.	Thin continuous irregular/wavy line	- For limits of partial views
7.	Thick continuous irregular/wavy line	- For irregular boundaries or short break lines.
8.	Thick line with Arrow heads	- Used for dimension lines