theodolite with laser ranging

例句：

1. 1. Theodolites are used for precise measurementsof distances.
   测距仪用于精确测量距离。
2. 2. Theodolites areessential tools for surveyors and engineers.
   测距仪是测量师和工程师必不可少的工具。
3. 3. Theodolites can beused to measure the angle between two pointson a map.
   测距仪可以用来测量地图上两点之间的夹角。