| ELEMENT LEFT SURFACE RADIUS | -6.169 INCHES AND 1.700 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -6.169 INCHES AND 16.598 INCHES |
| ABBE CONSTANT | 58.800 AND 33.800 |
| AXIAL THICKNESS | 0.370 INCHES NOMINAL AND 0.150 INCHES NOMINAL |
| BACK FOCAL LENGTH | 3.176 INCHES |
| COMPOUND LENS EDGE THICKNESS | 0.296 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.520 INCHES NOMINAL |
| COMPOUND LENS STYLE | DOUBLET |
| DIAMETER | 1.750 INCHES MINIMUM AND 1.752 INCHES MAXIMUM |
| EQUIVALENT FOCAL LENGTH | 3.133 INCHES |
| FRONT FOCAL LENGTH | 2.773 INCHES |
| FSC APPLICATION DATA | OPTICAL SIGHTING AND RANGING EQUIPMENT |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND DOUBLE CONCAVE |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | GLASS OPTICAL |
| REFRACTION INDEX | 1.6110 NOMINAL AND 1.6490 NOMINAL |