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 5985-00-942-6168
NSN 5990-01-538-6115
NSN 6135-01-507-4346
NSN 5950-00-990-8797
NSN 6650-01-232-9630
NSN 5985-01-187-0882
NSN 6145-01-620-1502
NSN 5905-01-341-2463
NSN 5950-01-203-6874
NSN 5975-01-390-2703
NSN 5950-01-414-6930
NSN 6240-00-907-3371