Edge tin plated over platinum plated
A transparent item of a predetermined size that permits unobstructed and undistorted view of a desired area. It may include a frame, have reference markings, grid lines and may be heat strengthened and/or tinted. It is generally used where safety, security, and/or the restriction of foreign matter are required, such as the visual examination of the inside of pressurized tanks, liquid sights, controlled liquid flow, and inspection of equipment enclosed in a housing. See window (as modified); scale, cathode ray tube; scale, plotting; window, metal; window, wood; and window panel, aircraft.
Classification: Pressed or molded glass articles, wired or not, for building or construction;leaded glass windows etc; formed multicellular or foam glass
NSN 5998-01-119-0120
NSN 5920-01-412-1080
NSN 5895-01-473-1522
NSN 6150-01-155-7621
NSN 7035-00-238-3662
NSN 5965-00-603-4983
NSN 5905-01-554-6667
NSN 5895-00-122-2924
NSN 6130-00-052-0907
NSN 5960-01-381-2478
NSN 5835-01-561-2959
NSN 5925-01-020-7706