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National Stock Number:
1240-00-698-1666
Federal Supply Class:
1240
National Item Identification Number:
006981666
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:
| 230423PC1 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER |
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Techincal Specification:
| INSCRIPTION COLOR | BLACK | | INSIDE DIAMETER | 0.594 INCHES NOMINAL | | OVERALL HEIGHT | 0.677 INCHES MINIMUM AND 0.697 INCHES MAXIMUM | | OVERALL OUTSIDE DIAMETER | 1.390 INCHES MINIMUM AND 1.410 INCHES MAXIMUM | | MATERIAL | COPPER ALLOY | | MOUNTING CONFIGURATION | TWO 0.138 IN.-40 NF THREADED SETSCREW HOLES | | SCALE DIVISION QUANTITY | 1 | | SURFACE TREATMENT | ANODIZE |
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