| ELEMENT LEFT SURFACE RADIUS | -4.016 INCHES AND 6.604 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -4.016 INCHES AND 77.835 INCHES |
| ABBE CONSTANT | 57.400 AND 36.600 |
| AXIAL THICKNESS | 0.394 INCHES NOMINAL AND 0.217 INCHES NOMINAL |
| BACK FOCAL LENGTH | 11.592 INCHES |
| COMPOUND LENS EDGE THICKNESS | 0.599 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.610 INCHES NOMINAL |
| COMPOUND LENS STYLE | DOUBLET |
| DIAMETER | 2.282 INCHES MINIMUM AND 2.283 INCHES MAXIMUM |
| EQUIVALENT FOCAL LENGTH | 11.973 INCHES |
| FRONT FOCAL LENGTH | 11.970 INCHES |
| FSC APPLICATION DATA | OPTICAL SIGHTING RANGING EQUIPMENT |
| 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 | 1.5225 NOMINAL AND 1.6170 NOMINAL |