Description:

1 ply quantity, 2.531 inches overall length, 2.219 inches overall width, 0.125 inches overall thickness, dry heat resistant environmental protection.

Special Features:

Protective covering material on both sides, four 0.128 in. Diameter holes centered one per side 0.141 in. From edge, anti-static coated per mil-w-80, special requirements for nuclear propulsion plant equipment contained in individual repair parts ordering data instrumentation control no. Ac3400a, line no. 0211

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.