This presents an aiming mark, usually a ring with a central dot on the reflector screen, giving the gunner a clear view of the target with the graticule pattern superimposed on it.

• 这样就能在玻璃屏幕上产生一个瞄准标记，通常是一个圆环中心有个圆点，给射击者一个目标和瞄准标记重叠的清晰镜像。