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 5835-01-066-3676
NSN 5855-00-908-9314
NSN 5999-01-054-9947
NSN 6240-01-050-9156
NSN 5920-01-102-6728
NSN 5960-00-768-3746
NSN 5895-00-167-4746
NSN 5945-01-367-5350
NSN 6150-01-528-3572
NSN 6320-00-925-0558
NSN 5960-01-170-4057
NSN 5935-00-128-6144