2011

Table Of Contents
dimension is drawn through the center point of the arc instead of to the
extension line.
The DIMSE1 system variable controls whether or not a radial or diametric
dimension will be drawn with an extension line when it is positioned off the
end of an arc. When the display of the arc extension line is not suppressed,
a gap between the arc and arc extension line is made. The size of the gap
drawn is controlled with the DIMEXO system variable.
Control Centerlines and Center Marks
Depending on your dimension style settings, center marks and lines generate
automatically for diameter and radius dimensions. They are created only if
the dimension line is placed outside the circle or arc. You can create centerlines
and center marks directly with the DIMCENTER command.
You can control the size and visibility of centerlines and center marks on the
New/Modify Dimension Style dialog box, Symbols and Arrows tab, under
Center Marks. You can also access this setting with the DIMCEN system
variable.
810 | Chapter 29 Dimensions and Tolerances