| ELEMENT RIGHT SURFACE RADIUS | -0.595 INCHES AND -4.220 INCHES |
| ELEMENT LEFT SURFACE RADIUS | 0.793 INCHES AND -0.595 INCHES |
| ABBE CONSTANT | 59.900 AND 36.200 |
| AXIAL THICKNESS | 0.236 INCHES NOMINAL AND 0.024 INCHES NOMINAL |
| BACK FOCAL LENGTH | 1.281 INCHES |
| COMPOUND LENS EDGE THICKNESS | 0.166 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.240 INCHES MINIMUM AND 0.272 INCHES MAXIMUM |
| COMPOUND LENS STYLE | DOUBLET |
| DIAMETER | 0.686 INCHES MINIMUM AND 0.689 INCHES MAXIMUM |
| EQUIVALENT FOCAL LENGTH | 1.444 INCHES |
| FSC APPLICATION DATA | BINOCULAR,M7,M16 |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174,GRADE C,TYPE 541-599 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-G-174,GRADE C,TYPE 621-362 MIL SPEC 2ND MATERIAL RESPONSE |
| MATERIAL | GLASS OPTICAL |
| REFRACTION INDEX | 1.5411 NOMINAL AND 1.6210 NOMINAL |
| SPECIAL FEATURES | REFLECTION REDUCING TREATMENT ON FRONT AND BACK SURFACES,JAN-M-621 |