技术参数：

1.  测量范围：0.6～300mm(钢).
2.  显示精度：0.001mm、0.01mm 二档可选 
3.  测量误差：(±0.3%H ＋ 0.1)mm 
4.  测量周期：4次/ 秒 
5.  测量频率：5MHz、2MHz  
6.  声速范围：1000-9999m/s 

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