Special Features:

5 mtg holes 0.246 in. Diameter spaced 0.906 in. C to c along the top lg, 6 mtg holes 0.246 in. Diameter spaced 1.812 in. C to c along the w, 3 mtg holes 0.246 in. Diameter spaced 1.812 in. C to c along the bottom lg, 8 mtg holes 0.312 in. D; a spaced 1.812 in. C to c along the w, 2 mtg holes 0.312 in. Diameter spaced 1.812 in. C to c along the bottom lg, all corner holes 0.312 in. Diameter and 0.312 in. From center of hole to edge of window

Properties:

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.