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 5999-01-363-5559
NSN 6150-00-919-5628
NSN 5965-01-526-2087
NSN 5950-01-479-9878
NSN 5835-00-723-2505
NSN 4140-00-370-2612
NSN 6105-01-003-9162
NSN 6105-01-166-0145
NSN 5930-00-732-8401
NSN 6105-00-541-8472
NSN 6105-01-508-7921
NSN 5965-01-160-7037