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 6685-00-575-4647
NSN 6610-00-780-6779
NSN 6150-01-433-8350
NSN 5935-01-167-3681
NSN 5905-00-737-0790
NSN 5950-01-005-1164
NSN 6110-01-528-4034
NSN 5975-01-254-1684
NSN 5990-01-048-9536
NSN 5920-00-092-8729
NSN 5960-00-338-3577
NSN 5965-01-281-3895