NSN 1240-00-302-1328
Part Details | DIOPTER SCALE
1240-00-302-1328 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: 8200241, 1240-00-302-1328, 00-302-1328, 1240003021328, 003021328
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | JAN 01, 1963 | 00-302-1328 | 21868 ( SCALE, DIOPTER ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-00-302-1328
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8200241 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-00-302-1328
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL COMP 303 |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-763, CLASS 303, COND A FED SPEC SINGLE MATERIAL RESPONSE |
| SCALE DIVISION QUANTITY | 16 |
| SCALE UNIT OF MEASURE INSCRIPTION | DEGREES PLUS 0 TO 8;MINUS 0 TO 8 |
| INSCRIPTION COLOR | BLACK |
| OVERALL OUTSIDE DIAMETER | 1.838 INCHES NOMINAL |
| INSIDE DIAMETER | 1.151 INCHES NOMINAL |
| OVERALL HEIGHT | 0.780 INCHES NOMINAL |
| MOUNTING CONFIGURATION | 5 SETSCREWS |
| SPECIAL FEATURES | ENGRAVE 17 LINES(16 SPACES) EQUALLY SPACED,AND AS SHOWN,IN 329 DEG 28 MIN 16 SEC BASIC.EACH LINE TO BE IN TRUE POSITION WITHIN 10 MIN OF ARC.NUMBERLINES AS SHOWN.LINES TO BE 0.015 IN. WIDE AND DEEP.NUMBERS,PLUS AND MINUS SIGNS,0.020 IN. WIDE AND 0.015 IN. DEEP;APPLY FINE MATTE FINISH |
