NSN 1240-00-973-1411
Part Details | DIOPTER SCALE
1240-00-973-1411 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: 8566978, 1240-00-973-1411, 00-973-1411, 1240009731411, 009731411
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | OCT 07, 1966 | 00-973-1411 | 21868 ( SCALE, DIOPTER ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-00-973-1411
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8566978 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-00-973-1411
| Characteristic | Specifications |
|---|---|
| MATERIAL | ALUMINUM ALLOY 2024 |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-200 TO 3, ALLOY 2024, T4 FED SPEC SINGLE MATERIAL RESPONSE |
| SURFACE TREATMENT | ANODIZE |
| SCALE DIVISION QUANTITY | 7 |
| SCALE UNIT OF MEASURE INSCRIPTION | 3,2,1,MINUS SIGN/IN SYMBOL FO RM/,0,PLUS SIGN/IN SYMBOL FORM/,1,2,3 |
| INSCRIPTION COLOR | BLACK |
| OVERALL OUTSIDE DIAMETER | 2.370 INCHES MINIMUM AND 2.375 INCHES MAXIMUM |
| INSIDE DIAMETER | 1.750 INCHES MINIMUM AND 1.755 INCHES MAXIMUM |
| OVERALL HEIGHT | 0.354 INCHES MINIMUM AND 0.364 INCHES MAXIMUM |
| MOUNTING CONFIGURATION | 3 SETSCREWS |
| FSC APPLICATION DATA | PERISCOPE,M32,M35,AND M36,INTEGRATED WITH FIRE CONTROL EQUIPMENT |