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 5950-01-483-2277
NSN 5905-01-634-0595
NSN 5999-01-654-3933
NSN 6150-01-634-0575
NSN 5895-00-233-7309
NSN 6645-00-880-8045
NSN 5925-01-542-9068
NSN 5920-01-605-5436
NSN 5930-00-212-8866
NSN 6135-00-223-9563
NSN 6645-00-507-5544
NSN 5935-01-428-1659