1st and 2nd corner radii 1.890 in., remaining corners sq
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 5920-01-103-7229
NSN 5935-01-392-1385
NSN 5930-01-386-4446
NSN 5945-01-172-7261
NSN 6105-01-412-8480
NSN 5996-01-612-0970
NSN 5945-00-038-6557
NSN 5920-01-590-0493
NSN 5975-01-559-4611
NSN 6220-01-126-4839
NSN 4140-01-327-3241
NSN 5920-01-516-4876