This new method is a non-contact measurement and it can avoid any interference in the spray field. At the same time, it can reduce the normal errors in manual measurement of spray angle.
该方法实现了喷雾角的非接触测量，避免了常用方法对喷雾现场的干涉，减少了人工测量方法带来的误差。
Arbitrary Angle of sight line rotation is measured and Angle measurement is stopped at any time to start shooting by using the device.
该装置可测出瞄准线转动的任意角度，能随时停止测角进行射击。
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