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Alphabet of Lines (Line Conventions (Visible, Hidden, Center, Symmetry,…
Alphabet of Lines
Line Conventions
Visible
Hidden
Center
Symmetry
Section
Dimensioning
Leader
Cutting-plane or Viewing-Plane
Break
Phantom
Stitch
Chain Line
Several types of Lines commonly used in
engineering drawings
American Society of Mechanical Engineer (ASME) standard identifies each by name
Each line has a particular meaning to
engineer
designer
drafter
skilled technician must
recognize
understand
the meaning
correctly interpret and industrial print
used in the manufacturing environment
Engineering Line Conventions