| BEVEL ANGLE IN DEG | 44.8333 MINIMUM AND 45.1667 MAXIMUM |
| BEVEL DEPTH | 1.400 MILLIMETERS NOMINAL |
| DIAMETER | 39.800 MILLIMETERS MINIMUM AND 40.000 MILLIMETERS MAXIMUM |
| DISPERSION | 64.5 ANGSTROMS NOMINAL |
| FSC APPLICATION DATA | RANGEFINDER MK 37 MODS 5 AND 6 |
| MATERIAL DOCUMENT AND CLASSIFICATION | JAN-G-174, TYPE 517-645, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED |
| MATERIAL | GLASS OPTICAL LOCATION NOT OTHERWISE SPECIFIED |
| POLISHED PERIPHERY | NOT PROVIDED |
| POLISHED SURFACE | BOTH |
| REFLECTION REDUCING SURFACE | BOTH |
| REFRACTION INDEX | 1.5170 NOMINAL |
| SURFACE FINISH | POLISHED |
| THICKNESS | 3.300 MILLIMETERS MINIMUM AND 3.700 MILLIMETERS MAXIMUM |