NSN 1240-00-472-4447
Part Details | DIOPTER SCALE
1240-00-472-4447 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: 8619595, 1240-00-472-4447, 00-472-4447, 1240004724447, 004724447
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | JUN 02, 1971 | 00-472-4447 | 21868 ( SCALE, DIOPTER ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-00-472-4447
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8619595 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-00-472-4447
| Characteristic | Specifications |
|---|---|
| MATERIAL | ALUMINUM ALLOY 2024 |
| MATERIAL DOCUMENT AND CLASSIFICATION | WW-T-700 TO 3, T3 FED SPEC SINGLE MATERIAL RESPONSE |
| SCALE DIVISION QUANTITY | 100 |
| SCALE UNIT OF MEASURE INSCRIPTION | YARDS 0 TO 100 |
| INSCRIPTION COLOR | BLACK |
| OVERALL OUTSIDE DIAMETER | 1.500 INCHES NOMINAL |
| INSIDE DIAMETER | 1.390 INCHES NOMINAL |
| OVERALL HEIGHT | 0.687 INCHES NOMINAL |
| MOUNTING CONFIGURATION | PRESS ON |
| SPECIAL FEATURES | 100 EQUAL DIV TO BE ENGRAVED IN 360 DEG WITH LINES .015 IN. W AND .010 IN DEEP.GRADUATE ERROR IN SPACING OF DIVISIONS NOT TO EXCEED 15 MIN OF ARC,NON-ACCUMLATIVE.NUMBERS TO BE ENGRAVED .015 W AND .010 DEEP,.125 IN. AND .156 IN HIGH;.125 IN. HIGH NUMBERS COLOR RED NO. 30.1.2 OF MIL-STD-171 |
