| MQW (wavelength/4) and MTW (wavelength/10) series |
| Specifications: |
 |
| Material: BK-7 |
| Diameter:±.01 |
| Thickness: ±.01 |
| Surface Figure: As Specified Over 90% Clear Aperture |
| Back Surface: Finely Ground |
| Surface Quality: 80 - 50 |
| Bevels (Diameter Under 4"): 0.02 |
| Bevels (Diameter 4" and Over): 0.03 - 0.04 |
| Coating: Aluminum with S10 Overcoat |