6.0

Creating Skin Surfaces | 547
The ruled surface shows the surface normal, a short vertical line in one corner.
A surface normal shows where the surface starts and which direction is out.
If surface normal indicators are too small, use the
DISPSF system variable to
change the size. In the Individual Surface Display dialog box, change the
value in the Normal Length field. Adjust the setting as needed.
You can create a ruled surface from two augment lines, or by adding width to
a single augmented line. Besides using the command method, you can access
AMAUGMENT in the Desktop menu by choosing Surface ➤ Create Wireframe
➤ Augmented Lines.
To create an augmented line on a surface
1 Use
AMAUGMENT to create an augmented line on the surface.
Command AMAUGMENT
Select surface wire or [Angle/Distance/Spacing]:
Select the leftmost wire of the surface
Select surface wire or [Angle/Distance/Spacing]: Press
ENTER
When you use an augmented wire to create a surface, the vectors are ignored.
You specify a value for the width of the surface.