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PLTW IED Line Conventions

Terms in this set (10)

Construction Line
Very lightly drawn lines used as guides to help draw all other lines and shapes properly.
Object Line
Lines are thick and dark; used to define the
object.
Hidden Line
Lines used to show interior detail that is not visible from the outside of the part.
Center Line
Lines that define the center of arcs, circles, or Symmetrical parts. They are half as thick as an object line.
Section Line
Lines are used to define where there is material after a part of the object is cut away.
Short Break Line
A freehand drawn line that shows where a part is
broken to reveal detail behind the part or to shorten a
long continuous part
Dimension Line
Lines that are used to show distance.
Extension Line
Lines used to show where a dimension starts and stops on an object.
Long Break Line
Used to shorten very long objects that do not change in detail.
Leader Line
Leader lines are used to show dimensions of arcs, circles and to help show detail.
THIS SET IS OFTEN IN FOLDERS WITH...