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 6610-01-232-0814
NSN 5960-01-425-1454
NSN 6620-00-280-2874
NSN 7035-01-027-1718
NSN 5999-01-525-5604
NSN 6645-00-303-7698
NSN 6650-01-191-6862
NSN 5985-00-960-4595
NSN 6650-00-187-5388
NSN 6220-01-516-7088
NSN 5935-00-918-9395
NSN 5999-01-033-9195