Buffed finish
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 6685-00-256-2755
NSN 5835-00-510-0890
NSN 5835-01-387-4227
NSN 6620-01-185-9134
NSN 6610-01-153-8625
NSN 5999-01-594-7881
NSN 5905-01-324-4960
NSN 2925-01-183-2897
NSN 6110-01-341-5163
NSN 5990-01-225-9820
NSN 5985-01-487-7530
NSN 5930-01-500-1799