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: Articles of plastics & articles of other materials of heading 3901 to 3914, nesoi
NSN 5996-00-061-0336
NSN 2925-01-027-1293
NSN 5935-01-025-7272
NSN 5960-00-257-4203
NSN 5985-00-168-3001
NSN 7035-00-048-3723
NSN 5895-01-328-7455
NSN 5950-01-176-6722
NSN 6240-01-227-4178
NSN 5935-00-162-1262
NSN 5985-00-081-1217
NSN 5935-00-543-0976