1. ASTM Document F154 72T, “Tentative Recommended Practices and Nomenclature for Identification of Structures and Contaminants Seen in Specular Silicon Surfaces.
2. Hughes 3 mw He-Ne laser, Hughes Electron Dynamics Division, Torrance, California.
3. G-320 Optical Scanner, General Scanning Inc., Watertown, Massachusetts.
4. Carl Meyer f/1.5, 135 mm telephoto lens.
5. 01LPX 041 lens from Optical Industries, Santa Ana, California.