| ELEMENT LEFT SURFACE RADIUS | 1.510 INCHES AND -1.510 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -1.510 INCHES AND -5.967 INCHES |
| ABBE CONSTANT | 57.400 AND 33.800 |
| AXIAL THICKNESS | 0.363 INCHES NOMINAL AND 0.105 INCHES NOMINAL |
| BACK FOCAL LENGTH | 2.073 INCHES |
| COMPOUND LENS EDGE THICKNESS | 0.187 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.468 INCHES NOMINAL |
| COMPOUND LENS STYLE | DOUBLET |
| DIAMETER | 1.185 INCHES NOMINAL |
| EQUIVALENT FOCAL LENGTH | 2.326 INCHES |
| FSC APPLICATION DATA | FINDER,RANGE,T46E1,INTEGRATED WITH FIRE CONTROL EQUIPMENT |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | GLASS OPTICAL |
| REFRACTION INDEX | 1.5730 NOMINAL AND 1.6490 NOMINAL |