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 5835-01-457-7951
NSN 5975-01-456-1828
NSN 5985-00-926-2593
NSN 5930-01-255-1993
NSN 7035-01-380-0547
NSN 4140-01-215-1125
NSN 6110-01-326-7370
NSN 5905-01-040-1702
NSN 5996-00-133-4321
NSN 6110-00-654-1364
NSN 6685-01-629-0248
NSN 5895-01-441-4950