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 5835-01-632-6627
NSN 5960-01-411-5899
NSN 6320-00-481-7291
NSN 5965-01-359-5501
NSN 2925-01-525-8212
NSN 5950-00-010-3010
NSN 5999-01-468-0803
NSN 5935-01-314-9060
NSN 5950-01-646-0917
NSN 4140-00-281-4493
NSN 5975-01-504-9352
NSN 4140-00-387-3552