| Name | Index Square Contact Reticles |
| Description | These glass reticles offer greater stability than film reticles which can bend, warp, and easily be damaged. |
| Material | UV Fused Silica /BK7 or as required |
| Line Thickness(μm) | 25.00 |
| Surface Flatness | 3 - 4λ |
| Surface Quality | 60-40 |
| Angle Tolerance (arcsec) |
±1
|
| Centering (mm) | 0.25 |
| Line to Line Accuracy (μm) | ±2 |
| Line Thickness Tolerance (μm) | ±13 |
Optical Lens Design