Technical Illustration - Using Rapidograph Pens (the old way) Today these would be done in Adobe Illustrator. 3-D RENDERING SAMPLE PACKAGES (PDF=2MB)  Package 1 Digex Data Centers Butte County House, etc.  Package 2 Lockheed Skylab Skyway Village, etc. For Technical Black and White Illustrations, call 530 877 4944 ~All rights reserved. Thank you ~