NSN 1240-01-209-1741
Part Details | DIOPTER SCALE
1240-01-209-1741 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: 8635120, 1240-01-209-1741, 01-209-1741, 1240012091741, 012091741
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | MAY 24, 1985 | 01-209-1741 | 21868 ( SCALE, DIOPTER ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-01-209-1741
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8635120 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-01-209-1741
| Characteristic | Specifications |
|---|---|
| MATERIAL | STEEL CORROSION RESISTING |
| SCALE DIVISION QUANTITY | 11 |
| SCALE UNIT OF MEASURE INSCRIPTION | ZERO TO MINUS 01; ZERO TO PLUS 01 |
| INSCRIPTION COLOR | BLACK |
| OVERALL OUTSIDE DIAMETER | 1.868 INCHES NOMINAL |
| INSIDE DIAMETER | 0.813 INCHES NOMINAL |
| OVERALL HEIGHT | 0.344 INCHES NOMINAL |
| MOUNTING CONFIGURATION | FOUR MOUNTING HOLES 0.094 IN. DIA |
| FSC APPLICATION DATA | PERISCOPE |