Description:

0.980 inches width, 0.057 inches material thickness, 2.680 inches length, retaining ring attachment method, test set, convetional weapon, aircraft end item identification.

Special Features:

Marked seconds

Properties:

A piece of transparent material specifically designed to be placed directly in front of a dial or scale to protect it from foreign matter. It is cut to size and may include a frame. It may have an index line or other marking. See also window, observation; and dial, scale.