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 5925-00-979-5856
NSN 5920-01-502-9681
NSN 5855-01-288-6341
NSN 6110-01-291-1301
NSN 5996-00-117-4337
NSN 6685-01-445-8939
NSN 5950-00-237-6327
NSN 5915-01-272-3452
NSN 5965-00-845-6325
NSN 5945-00-567-2350
NSN 6240-00-573-7514
NSN 5985-01-362-8056