Prism pole
01
棱镜杆, 棱镜柱
a telescopic pole with a prism on top used in surveying for accurate measurements and positioning
例子
The surveyor set up the prism pole at the corner of the property to measure the distance accurately.
测量员在物业的角落设置了棱镜杆，以准确测量距离。
He adjusted the length of the prism pole to ensure the prism was at the correct height for the measurement.
他调整了棱镜杆的长度，以确保棱镜处于测量所需的正确高度。
