记录时间：24小时

浮筒直径：70mm或100mm

水位变幅：10m

误 差：≤±2cm

用 途：主要用于地震预报，监测记录地下水位变化过程.

Running time: 24 hours

Diameter of float: 70mm or 100mm

Stage fluctuation: 10m

Error: ≤±2cm

Application: It is used for records of the water level change process of the earthquake prediction and underground water