2. ALPHABET OF LINES
Art from:
The line conventions recommended by the
American National Standards Institute (ANSI)
are used in the following figures, together with
illustrations showing its application.
3. ALPHABET OF LINES
Art from:
Example:
•Dark, heavy lines.
•Show the outline and shape of an object.
•Define features you can see in a particular
view.
4. ALPHABET OF LINES
Art from:
Example:
•Light, narrow, short, dashed lines.
•Shows the outline of a feature that can not
be seen in a particular view.
•Used to help clarify a feature, but can be
omitted if they clutter a drawing.
5. ALPHABET OF LINES
Art from:
Example
•Thin line usually drawn at a 45 degree angle.
•Indicates the material that has been cut
through in a sectional view.
Section
Line
6. ALPHABET OF LINES
Art from:
Example:
•Thin line consisting of long and short dashes.
•Shows the center of holes, slots, paths of
rotation, and symmetrical objects.
7. ALPHABET OF LINES
Art from:
Example
•Dark, heavy lines.
• Show the length, width, and height of the
features of an object.
• Terminated with arrowheads at the end.
8. ALPHABET OF LINES
Art from:
Example
•Thick broken line that is terminated
with short 90 degree arrowheads.
•Shows where a part is mentally cut in
half to better see the interior detail.
9. ALPHABET OF LINES
Art from:
Example
•Thick wavy line.
•Used to break the edge or surface of a part
for clarity of a hidden surface.
10. ALPHABET OF LINES
Art from:
Example
•Long, thin lines.
•Used to show that the middle section of
an object has been removed so it can be
drawn on a smaller piece of paper.
11. ALPHABET OF LINES
Art from:
Example
Thin lines made up of long dashes alternating with pairs
of short dashes.
Three purposes in drawings.
1. To show the alternate position of
moving parts.
2. To show the relationship of parts
that fit together.
3. To show repeated detail.
Phantom Lines
