One of two sheets treated for low reflectivity
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 5855-01-476-0941
NSN 4140-00-331-0685
NSN 6610-01-385-1771
NSN 6685-01-396-1669
NSN 5920-00-705-2916
NSN 5855-01-010-4921
NSN 5990-01-608-3505
NSN 6145-01-448-5192
NSN 5996-01-205-3263
NSN 6685-01-045-9436
NSN 6650-01-039-3722
NSN 5905-01-462-0057