Creates a center mark entity associated with a selected circle, arc, or polyline arc.
Accessing the Command
command bar: centermark
menu bar: Dimension | Center Marks and Lines |Center Mark
toolbar: Dimensions | Center Marks and Lines|
You are prompted:
Select circle or arc: (Select a circle or a circular arc.)
Depending on the current value of the CENTERMARKEXE system variable, the center mark is drawn with or without extension lines.
Center mark only
Center mark with extension lines
|Select circle or arc||Select a circle, an arc, or a polyarc segment, which can be selected inside blocks and in drawing view viewports.|
The centermark is associative, so when the arc or circle is moved, the centermark repositions itself.
Center marks can be edited through grips.
- Center grip: drag the grip to move the center mark*.
- Overshoot grips: drag the grip to lengthen the extension line**.
*Use the CenterReset command to reset the centerline.
**If you lengthen an extension line, it loses its associativity, and so changing the diameter does not adjust the changed extension line. It will, however, still moved along with a circle.
DimCenter - places non-associative center marks at the center points of circles and arcs.
CenterDisassociate - breaks the association of centerline and a center mark entities.
CenterLine - creates a centerline entity associated with two selected lines.
CenterReassociate - recreates the association between a centerline entity and two selected lines, or between a center mark and a selected circle or arc.
CenterReset - resets centerline and center mark entities.