Aim and Methods Three methods are analysed and compared for measuring the lateral deflection of gun bore axis from firing plane and the deviation of the sight line from the barrel axis, according to the results measured in practice.

• 目的和方法 本文根据实际测量中遇到的问题 ；分析了 3种测量炮膛轴线偏离射面的偏离角及瞄准线偏移的方法 .