WorksheetsAlphabet of lines
Total questions: 10
Worksheet time: 5mins
It refers to a standardized set of line types used to convey different types of information on technical drawings and diagrams.
Alphabet of lines
Line that usually indicates the center of holes, circles, and arcs. The line is thin and dark.
A thick, dark (unbroken) line is used to show the outline of an object, visible edges, and surfaces.
Visible line
A long line followed by two short dashes is used to show the alternate position of a moving part.
Visible Line
Phantom Line
Section Line
Break line
A medium line with an arrowhead to show notes, labels for size, or special information about a feature.
Leader Line
A thin and dark line is used to show the starting and ending of a dimension.
extension line
A thin and dark line is used to show the size (span) of an object with a numeric value. It usually terminates with arrowheads or tick markings.
An extra-thick line is used to show cutaway views or a plane of projection where a section view is taken. The arrow indicates the direction of view.
The thin crosshatching line is used in sectional views to indicate different parts of an object or materials from which an object is manufactured.
dimension line
section line
break line
hidden line
Short dash lines are used to show nonvisible surfaces. Usually shows as medium thickness.
Hidden lines
