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		                             National Stock Number: 6650-01-317-7572
  Federal Supply Class: 6650
  National Item Identification Number: 013177572
  Description: LENS,OPTICAL INSTRUMENT
  Detail: An unmounted, transparent, color free lens which may be treated with a low reflection coating to increase light transmission. Includes single and compound elements. For items having two plane parallel surfaces, see WINDOW, OPTICAL INSTRUMENT. Excludes RETICLE, OPTICAL INSTRUMENT. 
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  Manufacturer Information:
 | J72B0033-1 | 12464 | MCDONNELL DOUGLAS CORP MCDONNELL DOUGLAS ELECTRONIC SYSTEMS CO |   
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  Techincal Specification:
 | AXIAL THICKNESS | 0.104 INCHES NOMINAL |  | DIAMETER | 1.168 INCHES NOMINAL |  | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE B, TYPE 689-312 MIL SPEC SINGLE MATERIAL RESPONSE |  | MATERIAL | GLASS OPTICAL |  | SINGLE LENS STYLE | PLANO-CONCAVE |   
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