施放建筑物基础轴线时,控制点如距离建筑物较远,需要附设经纬仪导线把点引到建筑物附近。这就有可能在测角、量边上出现差错。这些差错往往是在外业结束后进行内业计算时,才能从闭合差是不是超限反映出来。发现差错后, When casting the base axis of a building, the control point is far from the building and a theodolite wire is required to guide the point to the vicinity of the building. This makes it possible to make mistakes in the angle measurement and quantity side. These errors are often reflected in the closure of the industry after the completion of the fieldwork. After finding an error,