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 5960-01-165-1956
NSN 5965-00-973-9974
NSN 5925-00-808-9514
NSN 5965-01-033-9352
NSN 6645-01-467-9983
NSN 5855-01-344-8688
NSN 5905-00-167-6872
NSN 6135-01-419-2233
NSN 5910-01-467-3009
NSN 5945-01-517-0004
NSN 6130-01-594-7668
NSN 5835-01-509-8249