![CGH](https://productimages.edmundoptics.com/20530.jpg?w=305&quality=80)
- Measure Surface Figure Error of Concave and Convex Cylinder Lenses
- Diverse Range of Cylindrical f/#s Available
- Easy to Install and Align
![Coating Testing Kits for Military Specifications (MIL-SPEC)](https://productimages.edmundoptics.com/9773.jpg?w=305&quality=80)
- Test Optical Coatings for Abrasion and Adhesion Resistance per MIL Specifications
- Includes Instructions and Certifications of Conformance
- Replacement Erasers, Cheesecloth, and Other Components Available
![Edmund Optics® Autocollimator](https://productimages.edmundoptics.com/1361.jpg?w=305&quality=80)
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- 5 Arcmin Resolution
- Economical Design
- ¼-20 Tap Hole for Mounting to Optical Bench Posts
![Schlieren Systems](https://productimages.edmundoptics.com/1503.jpg?w=305&quality=80)
- Ideal for Flame Analysis
- Includes Two Aluminized First Surface Mirrors
- Includes an Assembled Foucault Tester
![Spherometer](https://productimages.edmundoptics.com/1090.jpg?w=305&quality=80)
- Used for Measuring Convex or Concave Radii
- Easy to Use
- Standards Included for Calibrating
![Lens Stress Analyzers](https://productimages.edmundoptics.com/7601.jpg?w=305&quality=80)
- Identify Lens Stress or Contamination
- Portable, Compact Design
- Bench-Top or Phone Clip-On Models Available
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