Create an AutoCAD block containing the graphical representation of the north arrow.
Use the Block Editor to create the north arrow block.
Type BE at the command line to open the Block Editor.
Specify a name for the north arrow block.
Add any desired graphics or decorations.
Define the rotation property.
On the Block Authoring Parameter Sets palette, click Rotation Set.
Right-click the resulting parameter and click Properties.
You can also type PROPERTIES at the Command prompt.
In the Properties palette, under Property Labels, change the Rotation Set to Map.View.Rotation.
AutoCAD Map 3D uses this parameter to calculate the angle of the north arrow.
To avoid displaying this property, under Misc in the Properties palette, change Show Properties to No.
To avoid displaying the grips for this property, change Number of Grips to 0.
Save the block and close the Block Editor.
Add the scale property in similar manner as above for view rotation.