stalogometer

例句：

1. 1. The stalogometer is used to measure the distance between two points on a map.
   测距仪用于测量地图上两点之间的距离。
2. 2. The stalogometer was invented by a scientist who wanted to improve navigation in ships.
   测距仪是由一位科学家发明的，他想在船上改进导航。
3. 3. The stalogometer is an essential tool for surveyors and engineers who need to measure largeareas.
   测距仪是测量员和工程师们必不可少的工具，他们需要测量大片区域。