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 7035-00-096-9986
NSN 5999-01-537-0977
NSN 6220-01-225-7830
NSN 6105-00-611-2581
NSN 6110-01-395-2970
NSN 5905-01-118-7846
NSN 5920-00-427-2985
NSN 6130-01-354-9306
NSN 7035-01-122-1264
NSN 5965-00-834-2603
NSN 5950-00-304-2155
NSN 6685-01-416-8380