2013

Table Of Contents
Control Dimension Arrowheads
You can control the arrowhead symbols in dimensions and leaders including
their type, size, and visibility.
You can choose from many standard types of arrowheads, or you can create
your own arrowheads. Additionally, you can
Suppress the display of arrowheads, or use one arrowhead only
Apply a different type of arrowhead to each end of a dimension line
Control the size of arrowheads
Flip the direction of an arrowhead using the dimension shortcut menu
NOTE Flipped arrowheads maintain their appearance in versions later than
AutoCAD 2002. However, if you edit a drawing with flipped arrowheads in a
release earlier than AutoCAD 2006, the arrowhead directions will revert to their
original orientations.
See also:
Customize Arrowheads (page 570)
Customize Arrowheads
You can create your own custom arrowheads.
Arrowheads are stored as block definitions. To use your own arrowhead,
provide the name of an existing block definition. For information about
creating blocks, see
Create Blocks Within a Drawing (page 317).
NOTE Annotative blocks cannot be used as custom arrowheads for dimensions or
leaders.
Arrowhead sizing relies on the overall dimension scale factor. When you create
a dimension, the block is inserted where the arrowheads would normally go.
The object's X and Y scale factors are set to arrowhead size overall scale. The
dimension line is trimmed by text gap x overall scale units at each end. To trim
the dimension line, the rightmost block is inserted with a zero rotation angle
for horizontal dimensioning. The leftmost block is rotated 180 degrees about
its insertion point.
570 | Chapter 9 Annotate Drawings