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 7035-01-073-9424
NSN 6110-01-657-0014
NSN 6320-01-492-0243
NSN 5935-01-317-6719
NSN 2925-01-455-2558
NSN 5925-01-440-1187
NSN 4140-00-728-3097
NSN 6130-00-756-8749
NSN 6135-01-247-5660
NSN 5910-01-554-0830
NSN 5985-00-526-0154
NSN 5985-01-525-4080