Corners slightly rounded
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 5920-01-136-6802
NSN 6645-01-527-9265
NSN 5835-01-023-4993
NSN 5935-01-272-0444
NSN 6110-01-324-0021
NSN 6685-00-595-5376
NSN 5999-01-077-3270
NSN 5998-00-633-5169
NSN 5996-00-823-8487
NSN 5855-00-532-0025
NSN 5920-00-073-5507
NSN 6240-01-358-5138