potamometer

例句：

1. 1. The potamometer was used to measure the depth of the water.
   使用测深计来测量水深。
2. 2. The potamometer helped us determine the exact location of the hidden treasure.
   测距仪帮助我们确定了隐藏宝藏的具体位置。
3. 3. The potamometer was used to measure the height of the trees in the forest.
   测高仪被用来测量森林中树木的高度。