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		                        | National Stock Number:
 1240-00-658-9619
 
 Federal Supply Class:
 1240
 
 National Item Identification Number:
 006589619
 
 Description:
 RETICLE ASSEMBLY,OPTICAL INSTRUM
 
 Detail:
 An optical element consisting of a polished optical glass disk to which is bonded a RETICLE, OPTICAL INSTRUMENT and a PRISM, OPTICAL INSTRUMENT. A right-hand and a left-hand assembly are used in an optical system to provide three dimensional vision of an object or target.
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 Manufacturer Information:
 
 | 1073979PC90 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER |  | 1073979PC90 | 14001 | GRAYCO OPTICAL CORP |  | 1073979PC90 | 89944 | ELBITAMERICA, INC. | 
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 Techincal Specification:
 
 | ANGLE IN DEG | 45.0 |  | AXIAL THICKNESS | 4.0 MILLIMETERS NOMINAL |  | DISPERSION | 46.0 ANGSTROMS NOMINAL |  | GRADUATIONS/MARKINGS | CROSS LINE |  | MATERIAL | GLASS OPTICAL |  | REFRACTION INDEX | 1.5171 NOMINAL |  | RIM FINISH | POLISHED |  | STYLE DESIGNATOR | CROSSLINE | 
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