Installed on 1/2 inch sight flow indicator manufacturers model number fif-r/brz/neo
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 7035-01-029-7221
NSN 5998-01-371-8598
NSN 6110-01-485-0276
NSN 5985-00-597-2966
NSN 5855-01-060-8521
NSN 5960-00-946-7767
NSN 2925-01-172-9209
NSN 5895-00-843-5418
NSN 7035-00-020-2227
NSN 2925-00-905-2655
NSN 4140-01-079-1146
NSN 5998-01-415-3068