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National Stock Number:
1240-00-389-3555
Federal Supply Class:
1240
National Item Identification Number:
003893555
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:
| 230938PC3 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER |
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Techincal Specification:
| FSC APPLICATION DATA | TELESCOPE MK31 | | INSCRIPTION COLOR | WHITE | | INSIDE DIAMETER | 2.625 INCHES NOMINAL | | OVERALL HEIGHT | 0.200 INCHES NOMINAL | | OVERALL OUTSIDE DIAMETER | 2.750 INCHES NOMINAL | | MATERIAL | COPPER ALLOY | | MOUNTING CONFIGURATION | ONE SETSCREW HOLE 0.094 IN. DIA | | SCALE DIVISION QUANTITY | 8 | | SCALE UNIT OF MEASURE INSCRIPTION | PLUS 2 TO MINUS 4 AND MINUS 2 TO PLUS 4 |
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