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National Stock Number:
1240-01-209-1741
Federal Supply Class:
1240
National Item Identification Number:
012091741
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:
| 8635120 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| FSC APPLICATION DATA | PERISCOPE | | INSCRIPTION COLOR | BLACK | | INSIDE DIAMETER | 0.813 INCHES NOMINAL | | OVERALL HEIGHT | 0.344 INCHES NOMINAL | | OVERALL OUTSIDE DIAMETER | 1.868 INCHES NOMINAL | | MATERIAL | STEEL CORROSION RESISTING | | MOUNTING CONFIGURATION | FOUR MOUNTING HOLES 0.094 IN. DIA | | SCALE DIVISION QUANTITY | 11 | | SCALE UNIT OF MEASURE INSCRIPTION | ZERO TO MINUS 01; ZERO TO PLUS 01 |
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