你一开始先设置你的经纬仪（一个在校准的基座上旋转的望远镜），观测该物体。

You'd start by setting up your transit (a telescope that rotates on a calibrated base) and taking a sight on the object.

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分析了大地测量仪器望远镜调焦运行误差产生的原因，并以经纬仪为例，介绍一套利用JSJ综合检验仪对其调焦误差进行检定的方法。

Meanwhile, the method that tests the focus running error by using JSJ integrating inspection instrument through an example of theodolite is introduced.

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