主要用于校对火炮发射前的水平位置.可用于小角度的测量.主要技术参数:分度值:60"(0.3mm/1m) 外形尺寸:(110×33×36)mm 重量:0.32kg Mainly uses in to proofread before the artillery launch the horizontalposition May use in the small angle surveyMain technical parameter:Scale interval: 60 "(0.3mm/1m)external dimensions: (110×33×36) mmweight: 0.32kg