| ELEMENT LEFT SURFACE RADIUS | -2.795 INCHES AND 4.331 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -2.795 INCHES AND 10.018 INCHES |
| ABBE CONSTANT | 58.800 AND 32.400 |
| BACK FOCAL LENGTH | 16.640 INCHES |
| AXIAL THICKNESS | 0.295 INCHES NOMINAL AND 0.150 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.424 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.4448 INCHES NOMINAL |
| COMPOUND LENS STYLE | DOUBLET |
| DIAMETER | 1.772 INCHES NOMINAL |
| EQUIVALENT FOCAL LENGTH | 17.276 INCHES |
| FRONT FOCAL LENGTH | 17.652 INCHES |
| FSC APPLICATION DATA | 1. OPTICAL SIGHTING RANGING EQUIPMENT |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND DOUBLE CONCAVE |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | GLASS OPTICAL |
| REFRACTION INDEX | 1.6110 NOMINAL AND 1.6660 NOMINAL |