| ELEMENT LEFT SURFACE RADIUS | -3.337 INCHES AND 4.723 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -10.542 INCHES AND -3.337 INCHES |
| ABBE CONSTANT | 58.600 AND 33.800 |
| AXIAL THICKNESS | 0.414 INCHES NOMINAL AND 0.178 INCHES NOMINAL |
| BACK FOCAL LENGTH | 7.214 INCHES |
| COMPOUND LENS EDGE THICKNESS | 0.474 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.592 INCHES NOMINAL |
| COMPOUND LENS STYLE | DOUBLET |
| DIAMETER | 1.749 INCHES NOMINAL |
| EQUIVALENT FOCAL LENGTH | 7.500 INCHES |
| FRONT FOCAL LENGTH | 6.622 INCHES |
| FSC APPLICATION DATA | PERISCOPE INTEGRATED WITH FIRE CONTROL EQUIP |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | GLASS OPTICAL |
| REFRACTION INDEX | 1.5230 NOMINAL AND 1.6490 NOMINAL |