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National Stock Number:
1240-00-472-4447
Federal Supply Class:
1240
National Item Identification Number:
004724447
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:
| 8619595 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| INSCRIPTION COLOR | BLACK | | INSIDE DIAMETER | 1.390 INCHES NOMINAL | | OVERALL HEIGHT | 0.687 INCHES NOMINAL | | OVERALL OUTSIDE DIAMETER | 1.500 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | WW-T-700/3, T3 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 2024 | | MOUNTING CONFIGURATION | PRESS ON | | SPECIAL FEATURES | 100 EQUAL DIV TO BE ENGRAVED IN 360 DEG WITH LINES .015 IN. W AND .010 IN DEEP.GRADUATE ERROR IN SPACING OF DIVISIONS NOT TO EXCEED 15 MIN OF ARC,NON-ACCUMLATIVE.NUMBERS TO BE ENGRAVED .015 W AND .010 DEEP,.125 IN. AND .156 IN HIGH;.125 IN. HIGH NUMBERS COLOR RED NO. 30.1.2 OF MIL-STD-171 | | SCALE DIVISION QUANTITY | 100 | | SCALE UNIT OF MEASURE INSCRIPTION | YARDS 0 TO 100 |
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