Visible

Question 1

Visible outlines and edges

Answer 1

Continuous (thick)

Question 2

Dimension lines, leader lines, bending lines, projection lines, hatching, groove of a thread.

Answer 2

Continuous (Thin)

Question 3

Limits of partial or interrupted views and sections

Answer 3

Continuous (thin, irregular)

Continuous (thin, straight with zigzag)

Question 4

Hidden outlines and edges

Answer 4

Dashed (thin)

Question 5

Center lines, lines of symmetry, trajectories, pitch lines and circles

Answer 5

Chain (thin)

Question 6

Lines or surfaces to which a special requirement applies

Answer 6

Chain (thick)

Question 7

Cutting planes

Answer 7

Chain (thin, thick at ends and changes of direction)

Question 8

Outlines and edges of adjacent parts, alternative and extreme positions of movable parts, centroidal lines, initial outlines prior to forming, bend lines on developed blanks or patterns

Answer 8

Chain (thin doubled dashed)