2012

UCS
Sets the origin and orientation of the current UCS.
Access Methods
Button
Toolbar: Drafting tool set  Coordinates tool group  World UCS
Menu: Tools  New UCS
Shortcut menu: Right-click the UCS icon and click an option.
Summary
The UCS is the active coordinate system that establishes the XY plane (work
plane) and Z-axis direction for drawing and modeling. Control the UCS origin
and orientation to make drawing more convenient as you specify points, enter
coordinates, and work with drawing aids, such as Ortho mode and the grid.
A UCS can be stored with a viewport if the
UCSVP (page 1481) system variable
is set to 1 for that viewport.
List of Prompts
The following prompts are displayed.
Specify Origin of UCS (page ?) or [Face (page ?)/NAmed
(page ?)/OBject (page ?)/Previous (page ?)/View (page
?)/
World (page ?)/X/Y/Z (page ?)/ZAxis (page ?)] <World>:
Specify Origin of UCS
Shifts the user coordinate system origin point (0,0,0) to facilitate entering
absolute coordinates, creating ordinate dimensions, or setting the work plane
in 3D.
Defines a new UCS using one, two, or three points:
 If you specify a single point, the origin of the current UCS shifts without
changing the orientation of the X, Y, and Z axes.
 If you specify a second point, the UCS rotates to pass the positive X axis
through this point.
 If you specify a third point, the UCS rotates around the new X axis to
define the positive Y axis.
1072 | Chapter 2 Commands