Vertical UCS perpendicular to global X-axis

A new user co-ordinate system is defined by a single point. The point defines the origin of the new user co-ordinate system.

The axes of the user co-ordinate system are oriented in such a way so that:

• the X-axis of the user-coordinate system is always horizontal,

• the Y-axis of the user-coordinate system is always vertical,

• the XY plane of the user-coordinate system is perpendicular to the global X-axis.

The XY plane of this user co-ordinate system is always vertical with the Y-axis pointing upwards.

Note: Please read Rules for using a UCS.