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National Stock Number:
1240-00-393-0441
Federal Supply Class:
1240
National Item Identification Number:
003930441
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:
| 11733429 | 15716 | FOREST SCIENTIFIC INC | | 11733429 | 19200 | US ARMY ARDEC RDECOM | | 11733429 | 2S308 | FREEHOLD MANUFACTURING ASSEMBLY COMPANY, INC. |
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Techincal Specification:
| INSCRIPTION COLOR | BLACK | | INSIDE DIAMETER | 2.745 INCHES MINIMUM AND 2.750 INCHES MAXIMUM | | OVERALL HEIGHT | 0.771 INCHES MINIMUM AND 0.774 INCHES MAXIMUM | | OVERALL OUTSIDE DIAMETER | 2.990 INCHES MINIMUM AND 3.000 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | WW-T-700/3, TEMPER T3 THRU T6 FED SPEC 1ST MATERIAL RESPONSE OR WW-T-700/6, TEMPER T3 THRU T6 FED SPEC 2ND MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 6061 | | MOUNTING CONFIGURATION | 3 HOLES 0.112-40 UNC-2B 120 DEGREE APART | | SCALE DIVISION QUANTITY | 17 | | SCALE UNIT OF MEASURE INSCRIPTION | MILLIMETERS 4 TO 0 TO 4. | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 2,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE | | SURFACE TREATMENT | ANODIZE |
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