Edge tin plated over platinum plated
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 4140-01-225-0041
NSN 6320-01-176-8367
NSN 5930-01-460-8054
NSN 6105-01-188-7292
NSN 5935-00-556-1007
NSN 6650-01-197-4585
NSN 5950-01-487-3750
NSN 6610-00-097-5176
NSN 5960-00-351-4821
NSN 6320-01-308-9392
NSN 5910-00-904-9097
NSN 6320-01-054-3046