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Line Conventions (definition)

Terms in this set (11)

Line Conventions
Lines of varying style and thickness are used in specific ways to develop and communicate graphic messages about an object's geometry.
Construction Line
Very lightly drawn lines to guide drawing other lines and shapes.
Hidden Line
Show interior detail not visible from the outside of the part.
Object line
It's a thick and dark line that define the object.
Center Line
It defines the center of arcs, circles, or symmetrical parts and is half as thick as an object line.
Section Line
Defines where material is cut away
Short-Break Line
Freehand drawn Line

Shows where part is broken to reveal detail behind the part or to shorten a long continuous part
Dimension Line
It shows the distance, Arrows drawn on ends to show where dimension line starts and ends, and actual distance is typically located in middle of this line to display distance.
Extension Line
Shows where a dimension starts and stops, Used with dimension lines, Line is 1/16 away from part to avoid confusion with object lines.
Long-Break Line
Shorten very long objects with uniform detail and is typically represented as a jagged cut or break.
Leader Line
Show dimensions of arcs, circles, and detail
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