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IED - PLTW ch2

Terms in this set (10)

Construction Line
Very lightly drawn lines to guide drawing other lines and shapes
Object Line
Thick and dark
Define the object
Hidden Line
Show interior detail not visible from the outside of the part
Center Line
Define the center of arcs, circles, or symmetrical parts
Half as thick as an object line
Section Line
Define 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
Shows distance
Arrows drawn on ends to show where dimension line starts and ends
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
Typically represented as a jagged cut or break
Leader Line
Show dimensions of arcs, circles and detail
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