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 5945-00-466-2249
NSN 5930-00-769-3015
NSN 6610-01-541-2730
NSN 6150-01-596-5358
NSN 5930-00-560-2762
NSN 5935-01-044-2359
NSN 6320-00-343-1798
NSN 5960-01-395-6939
NSN 5998-01-430-7248
NSN 5975-01-044-3955
NSN 6150-01-122-7900
NSN 5990-00-065-3617