When theturret is stationary and the guns pointing in any direction otherthan astern, the moving graticule will be seen as being displacedfrom the fixed ring by the four electro magnets.

• 当炮塔不转动的时候，武器指向任何方向不单是指向机尾，在四个电磁铁作用下，活动环看起来和固定环重合。