Outline of the contents: <2e[; $  
 cl'wQ1<:
  
 1. Basic Interferometers for Optical Testing pE {yVs  
 2. Phase-Shifting Interferometry -cWGF  
 3. Specialized Optical Tests xC9?Wt'  
 4. Long Wavelength Interferometry n#5S-z1KNw  
 5. Testing of Aspheric Surfaces P&h]uNu  
 6. Measurement of Surface Microstructure @e-2]z  
 7. Absolute Measurements +xuj ]J  
 8. Concluding Remarks