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 6105-00-612-2006
NSN 6135-01-539-1167
NSN 7035-00-140-0474
NSN 5920-01-541-5030
NSN 5855-01-477-0550
NSN 5950-00-528-4423
NSN 7035-01-287-9817
NSN 6220-01-634-0660
NSN 6685-01-379-7764
NSN 6145-00-264-8940
NSN 6650-01-325-1576
NSN 6650-01-166-5025