用 途：主要用于地震預(yù)報(bào)，監(jiān)測(cè)記錄地下水位變化過程.

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