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 5835-01-566-5462
NSN 6105-00-168-8456
NSN 5945-00-232-0460
NSN 5990-00-758-4232
NSN 5935-01-628-8963
NSN 6105-01-625-8595
NSN 5905-01-350-3146
NSN 6135-01-164-3561
NSN 6620-01-391-4189
NSN 6685-01-530-3718
NSN 5905-01-591-3237
NSN 6240-01-455-5638