此方法是在参考了兄弟单位缺陷定位方法,并经过我厂实际使用后整理而成,比较简单方便,缺陷水平距离可在探头尺上直接读出来,只求一个缺陷深度(垂直距离)就可以了。目前国产仪器的示波屏刻度不够明显,也不够精确,往往需要将示波管前的有机玻璃卸下,以1毫米的精度重新刻度,先涂上红的或黑的颜色,然后再贴在示波管前面的有机玻璃板上,经过这样改动,刻度 This method is based on the fraudulent unit positioning method, and after finishing the actual use of our plant is relatively simple and convenient, the level of defects can be read directly on the probe ruler, only to find a depth of the defect (vertical distance) can be It’s At present, the scale of the oscilloscope screen made by domestic instrument is not obvious enough and it is not precise enough. It is often necessary to remove the plexiglass in front of the oscilloscope tube, re-calibrate it with a precision of 1 millimeter, apply the red or black color first, Oscilloscope in front of the plexiglass plate, after such changes, the scale