| ELEMENT LEFT SURFACE RADIUS | -1.709 INCHES AND 2.563 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -4.196 INCHES AND 1.709 INCHES |
| ABBE CONSTANT | 64.500 AND 33.800 |
| AXIAL THICKNESS | 0.772 INCHES NOMINAL AND 0.131 INCHES NOMINAL |
| BACK FOCAL LENGTH | 3.288 INCHES |
| COMPOUND LENS EDGE THICKNESS | 0.502 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.903 INCHES NOMINAL |
| COMPOUND LENS STYLE | DOUBLET |
| DIAMETER | 2.218 INCHES NOMINAL |
| EQUIVALENT FOCAL LENGTH | 3.708 INCHES |
| FSC APPLICATION DATA | TELESCOPE,INTEGRATED WITH FIRE CONTROL |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| MATERIAL DOCUMENT AND CLASSIFICATION | JAN-G-174, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | GLASS OPTICAL |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6490 NOMINAL |