Types & Uses of Lines

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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