IA maica

Thick dark line use to show outline of object, visible edges and surfaces.

• OBJECT OR VISIBLE LINES

• CONSTRUCTION LINE

• DIMENSION LINE

• HIDDEN LINE

Thin and dark lines use to show the size (span) of an object with a numeric value. Usually terminates with arrowheads or tick markings.

• OBJECT OR VISIBLE LINES

• CONSTRUCTION LINE

• DIMENSION LINE

• HIDDEN LINE

Very light and thin line use to construct layout work.

• OBJECT OR VISIBLE LINES

• CONSTRUCTION LINE

• DIMENSION LINE

• HIDDEN LINE

Short dash lines use to show non visible surfaces. Usually shows as medium thickness.

• HIDDEN LINE

• CENTER LINE

• EXTENSION LINE

• CUTTING PLANE LINE

Short dash lines use to show non visible surfaces. Usually shows as medium thickness.

• HIDDEN LINE

• CENTER LINE

• EXTENSION LINE

• CUTTING PLANE LINE

Long and short dash lines. Usually indicates center of holes, circles and arcs. Line is thin and dark.

• HIDDEN LINE

• CENTER LINE

• EXTENSION LINE

• CUTTING PLANE LINE

Long and short dash lines. Usually indicates center of holes, circles and arcs. Line is thin and dark.

• HIDDEN LINE

• CENTER LINE

• EXTENSION LINE

• CUTTING PLANE LINE

Thin and dark line use to show the starting and ending of dimension.

• HIDDEN LINE

• CENTER LINE

• EXTENSION LINE

• CUTTING PLANE LINE

Thin and dark line use to show the starting and ending of dimension.

• HIDDEN LINE

• CENTER LINE

• EXTENSION LINE

• CUTTING PLANE LINE

– Extra thick lines use to show cutaway views or plane of projection where a section view is taken. Arrow indicates

the direction of view.

• HIDDEN LINE

• CENTER LINE

• EXTENSION LINE

• CUTTING PLANE LINE