About HIGUCHI KEI
About 坂田電機
About 日本地すべり学会誌
About extensometer
About equipment
About principle
About accuracy
About method
About 地盤伸縮計
About 地すべり観測機器
About equipment
About 計測原理
About 設置方法
About Methods
About Slope stability,deformation by excavating
About Natural disasters
About Others
About 地すべり
About 観測
About 歴史
About 現状
About 地盤
About 伸縮計