UCSAXISANG (System Variable)

Stores the default angle when rotating the UCS around one of its axes using the X, Y, or Z option of the UCS command.

Type:Integer
Saved in:Registry
Initial value:90

The value must be entered as an angle in degrees (valid values are: 5, 10, 15, 18, 22.5, 30, 45, 90, 180).