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		                             National Stock Number: 1240-01-623-1854
  Federal Supply Class: 1240
  National Item Identification Number: 016231854
  Description: FILTER,LIGHT,OPTICAL INSTRUMENT
  Detail: AN ITEM HAVING TWO PLANE-PARALLEL SURFACES AND CONSISTING OF A POLARIZING MATERIAL BONDED BETWEEN GLASS OR PLASTIC. THIS ITEM TRANSMITS LIGHT IN ONLY ONE PLANE AND IS USUALLY USED IN PAIRS TO VARY THE LIGHT TRANSMITTED INTO OR THROUGH AN OPTICAL INSTRUMENT. EXCLUDES WINDOW, OPTICAL INSTRUMENT.
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  Manufacturer Information:
 | 13092161 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |   
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  Techincal Specification:
 | DENSITY VARIABILITY | NOT VARIABLE |  | PART NAME ASSIGNED BY CONTROLLING AGENCY | FILTER, OPTICAL |  | PROPRIETARY CHARACTERISTICS | PACS |  | SURFACE MATERIAL | ANY ACCEPTABLE |   
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