| ELEMENT LEFT SURFACE RADIUS | 0.689 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 0.404 INCHES |
| ABBE CONSTANT | 55.500 |
| AXIAL THICKNESS | 0.739 INCHES NOMINAL |
| BACK FOCAL LENGTH | 89.440 INCHES |
| COMPOUND LENS EDGE THICKNESS | 0.605 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.739 INCHES NOMINAL |
| DIAMETER | 1.063 INCHES NOMINAL |
| EQUIVALENT FOCAL LENGTH | 153.600 INCHES |
| FSC APPLICATION DATA | 1. OPTICAL SIGHTING AND RANGING EQUIPMENT INTEGRATED WITH FIRE CONTROL |
| MATERIAL DOCUMENT AND CLASSIFICATION | JAN-G-174, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | GLASS OPTICAL |
| REFRACTION INDEX | 1.6380 NOMINAL |
| SINGLE LENS STYLE | MENISCUS DIVERGING |