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National Stock Number:
1240-00-088-6757
Federal Supply Class:
1240
National Item Identification Number:
000886757
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:
| 8619884 | 11934 | SEILER INSTRUMENT AND MANUFACTURING COMPANY, INCORPORATED | | 8619884 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| FSC APPLICATION DATA | PERISCOPE,INTEGRATED WITH FIRE CONTROL EQUIPMENT | | INSCRIPTION COLOR | WHITE | | INSIDE DIAMETER | 1.812 INCHES NOMINAL | | OVERALL HEIGHT | 0.488 INCHES NOMINAL | | OVERALL OUTSIDE DIAMETER | 2.270 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | WW-T-785, TYPE 1, T3-CANCELED FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 2024 | | MOUNTING CONFIGURATION | 1 SETSCREW | | SCALE DIVISION QUANTITY | 5 | | SCALE UNIT OF MEASURE INSCRIPTION | 2,1,MINUS SIGN/IN SYMBOL FORM/,0,PLUS SIGN/IN SYMBOL FORM/,1,2 | | SURFACE TREATMENT | ANODIZE |
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