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		                        | National Stock Number:
 1240-01-170-4393
 
 Federal Supply Class:
 1240
 
 National Item Identification Number:
 011704393
 
 Description:
 PRISM,OPTICAL INSTRUMENT
 
 Detail:
 A TRANSPARENT ITEM WITH AT LEAST TWO POLISHED PLANE SURFACES INCLINED TOWARD EACH OTHER, DESIGNED FOR USE IN OPTICAL INSTRUMENTS TO REFLECT AND/OR REFRACT A BEAM OF LIGHT. IT MAY HAVE ONE OR MORE MIRRORED SURFACES FOR GREATER REFLECTION. INCLUDES OPTICAL WEDGES USED TO DIVERT PATHS OF LIGHT BY REFRACTION, BUT TO A LESSER DEGREE. SEE ALSO BEAM SPLITTER, OPTICAL INSTRUMENT.
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 Manufacturer Information:
 
 | 13074774 | 04939 | LOCKHEED MARTIN CORPORATION |  | 13074774 | 58260 | PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH | 
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 Techincal Specification:
 
 | MATERIAL | GLASS OPTICAL |  | STYLE DESIGNATOR | DOVE | 
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