| Materail:Zerodur or equivalent material | Dimension Tolerance:±0.1mm |
| All Other Angles:90°±6′ | All Other Surfaces:Fine Ground |
| Bevel:<0.25mmX45° | Coating:See the detail in the list |
| Mounting Surface:Commercial polished | |
| Angle Between Mirrored Surfaces:90°± 1″ | |
| Surface Quality Of Mirror Surfaces:20/10 | |
| Flatness Of Mirror Surfaces:λ/10@632.8nm | |