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National Stock Number:
1240-01-287-6399
Federal Supply Class:
1240
National Item Identification Number:
012876399
Description:
SCALE,DIOPTER
Detail:
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.
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Manufacturer Information:
| 8270279 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| INSIDE DIAMETER | 1.3120 INCHES NOMINAL | | OVERALL HEIGHT | 0.360 INCHES NOMINAL | | OVERALL OUTSIDE DIAMETER | 1.380 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-200/3, ALLOY 2024, T4 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-200/8, 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE OR WW-T-700/3, T3 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 6061 | | SCALE DIVISION QUANTITY | 100 | | SCALE UNIT OF MEASURE INSCRIPTION | 10 GRADUATIONS FROM "10" TO "90" |
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