NSN 6540-00-655-8639
Part Details | CYLINDRICAL OPHTHALMIC LAP
6540-00-655-8639 A tool with a known surface diopter curvature used in the grinding or polishing of lens blanks to a prescribed surface having unequal radii of curvature.
Alternate Parts: MILL36224, 6540-00-655-8639, 00-655-8639, 6540006558639, 006558639
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 65 | JAN 01, 1963 | 00-655-8639 | 19985 ( LAP, OPHTHALMIC, CYLINDRICAL ) |
REFERENCE DRAWINGS & PICTURES
CYLINDER, CONVEX
Cross Reference | NSN 6540-00-655-8639
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| MILL36224 | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
Technical Data | NSN 6540-00-655-8639
| Characteristic | Specifications |
|---|---|
| STYLE DESIGNATOR | CYLINDER, CONVEX |
| MATERIAL AND LOCATION | IRON, CAST OVERALL |
| BASE CURVE IN DIOPTERS | 3.250 |
| CROSS CURVE IN DIOPTERS | 4.000 |
| FINISH INDICATOR | FINISHED |
| SPECIAL FEATURES | FLAT-BACK BASE; CONVEX SURFACE TO GRIND CONCAVE |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | LAP OPHTHALMIC CYLINDRICAL C5 CYL CONVEX IRON 3.25X4DIOPTERS |