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 5925-00-977-5843
NSN 6110-00-416-6840
NSN 6105-00-964-4060
NSN 6105-01-358-8068
NSN 5895-01-196-6312
NSN 6685-01-300-9090
NSN 4140-00-905-8331
NSN 4140-01-113-7611
NSN 6145-00-935-5242
NSN 5985-01-245-9064
NSN 5905-00-027-3295
NSN 5935-00-335-0423