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 6320-00-225-7013
NSN 2925-01-090-2391
NSN 6685-01-408-0098
NSN 5996-01-630-8108
NSN 6105-00-248-5772
NSN 5910-00-932-0629
NSN 6620-00-010-8190
NSN 5985-00-466-3574
NSN 6145-01-616-9653
NSN 5910-01-117-3426
NSN 5990-01-421-5342
NSN 6320-01-631-7828