Pressed in counterbored hole and oil level stenciled on glass front
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 6320-01-607-1491
NSN 6220-01-096-6478
NSN 6145-00-780-3306
NSN 6105-00-240-6933
NSN 2925-01-528-7333
NSN 6620-00-891-8584
NSN 5920-00-827-1094
NSN 5935-01-198-5902
NSN 6145-01-234-7680
NSN 5895-00-099-9348
NSN 5950-01-549-8824
NSN 6240-01-307-5094