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 6130-00-971-1651
NSN 5905-00-202-0998
NSN 5935-01-198-4694
NSN 5975-00-079-0022
NSN 6645-01-425-1673
NSN 2925-00-233-5644
NSN 6130-01-566-8942
NSN 6620-00-780-7786
NSN 5920-01-487-3700
NSN 6610-00-825-3111
NSN 6240-00-914-7398
NSN 5998-01-459-9489