NSN 1240-00-462-8645
Part Details | DIOPTER SCALE
1240-00-462-8645 A graduated scale, usually cylindrical in shape, attached to, or forming a part of, the focusing nut or knob of the eyepiece of an optical instrument. It is read in conjunction with a line or dart indicator to measure the change in refracting power of the eyepiece, in diopters, and introduces correction to compensate for the eyesight variation of the observer. It may have a knurled periphery and/or teeth on the inside diameter.
Alternate Parts: 8626447, 1240-00-462-8645, 00-462-8645, 1240004628645, 004628645
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | MAY 09, 1969 | 00-462-8645 | 21868 ( SCALE, DIOPTER ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-00-462-8645
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8626447 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-00-462-8645
| Characteristic | Specifications |
|---|---|
| MATERIAL | ALUMINUM ALLOY 2024 |
| MATERIAL DOCUMENT AND CLASSIFICATION | WW-T-700 TO 3, T3 FED SPEC SINGLE MATERIAL RESPONSE |
| SURFACE TREATMENT | ANODIZE |
| SCALE DIVISION QUANTITY | 12 |
| SCALE UNIT OF MEASURE INSCRIPTION | DIOPTERS MINUS 3 TO 0 TO PLUS 3 |
| INSCRIPTION COLOR | BLACK |
| OVERALL OUTSIDE DIAMETER | 2.906 INCHES NOMINAL |
| INSIDE DIAMETER | 2.550 INCHES NOMINAL |
| OVERALL HEIGHT | 0.525 INCHES NOMINAL |
| MOUNTING CONFIGURATION | 3 SETSCREWS |
| FSC APPLICATION DATA | PERISCOPE,XM50 |
