Transcript Basic Lines and Views

Basic Lines and Views
Basic Lines
Object Line
A heavy, dark line which identifies the visible edge or
surface of an object.
Hidden Line
• Broken line, medium thickness. Used to
show edges not visible.
Center Line
• Fine, broken line made of alternating short
and long dashes. Used to show the center of
an object.
Dimension Line / Extension Line
• Dimension Lines - used to show the extent
of a dimension.
• Extension Lines - Used to extend a point
from an object.
Leader
• Fine line used to define a point or area.
Grind Surface
Cutting Plane Line
• Used to indicate where an imaginary cut is
made through the object.
Section Lines
Steel
Cast Iron
Copper,
Bronze,
Brass
Lead, Zinc,
Alloys
Break Lines
• Short Break Line

Long Break Line
Used to show a part has been reduced in
length on the drawing to conserve space.
3”
250 feet
Basic Views
• Pictorial
• Orthographic
Pictorial
• Oblique

Isometric
Orthographic
Front View
Side Views
Top View
Bottom View
Back View
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