Roof, a 7 meter long lightning rod towering.
楼顶，一枚7米长的避雷针高耸。
The product is used for the function of lever meter. The main body of the product is mechnical universal device and additional rod.
该产品主要配合杠杆表使用，主体是机械万向装置及加长杆。
The three - meter checking device and hydraulic machine were developed to substitute the traditional three - legged divider plug gauge and correction by the thread rod.
设计的三表式检测装置和液压机具取代了传统的三脚规及塞片检测和人工操纵螺杆校正；
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