| ELEMENT LEFT SURFACE RADIUS | 7.317 INCHES AND 2.252 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -2.252 INCHES AND -3.374 INCHES |
| ABBE CONSTANT | 33.800 AND 64.500 |
| AXIAL THICKNESS | 0.123 INCHES NOMINAL AND 0.289 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.319 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.412 INCHES NOMINAL |
| COMPOUND LENS STYLE | DOUBLET |
| DIAMETER | 1.311 INCHES NOMINAL |
| EQUIVALENT FOCAL LENGTH | 5.502 INCHES |
| FRONT FOCAL LENGTH | 5.303 INCHES |
| FSC APPLICATION DATA | PERISCOPE,M16H,INTEGRATED WITH FIRE CONTROL EQUIPMENT |
| INDIVIDUAL LENS STYLE | MENISCUS DIVERGING AND DOUBLE CONVEX |
| MATERIAL DOCUMENT AND CLASSIFICATION | JAN-G-174, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | GLASS OPTICAL |
| REFRACTION INDEX | 1.6490 NOMINAL AND 1.5170 NOMINAL |