单词leveling-rod
na.: 水准(标)尺
网络: 水准尺；水准标尺；准尺杆
The sliding sight on a surveyor"s leveling rod.
标板：勘测水准标尺上的滑动观测器。
The movable target on a leveling rod.
水准尺上可移动的目标
Examination of Digital Level Gauge and Leveling Rod and Analysis on Accuracy
数字水准仪及水准尺的检定与精度分析
error due to leveling rod settlement
标尺的沉降误差