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 7035-01-098-5474
NSN 5945-01-575-7868
NSN 5965-01-390-0243
NSN 5960-01-564-5044
NSN 6685-01-425-1719
NSN 5835-00-984-1233
NSN 6110-01-068-3982
NSN 5950-00-600-1810
NSN 5965-01-294-6152
NSN 5895-00-003-2291
NSN 6610-01-197-5249
NSN 6320-00-731-6134