Corners slightly rounded
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 5930-00-423-2803
NSN 5990-01-408-6554
NSN 6610-01-409-1781
NSN 6610-00-684-7683
NSN 6110-00-850-2860
NSN 5920-01-466-9498
NSN 5990-01-268-6767
NSN 5945-01-308-4832
NSN 5895-00-422-2110
NSN 5990-00-396-8338
NSN 2925-00-785-9328
NSN 6685-01-123-7244