Downhole rock scratcher and method for identifying strength...
Extensometer
Extensometer anchor
Geographical displacement sensing unit and monitoring...
Ground characteristics analyzer
Instrument for testing earthen samples under triaxial load condi
Instrumented deep tillage implement
Material stress monitor
Means and method for soil testing
Measuring instrument for determining displacements in soil, rock
Measuring method of fluctuations of ground and its apparatus
Measuring spatial variability in soil characteristics
Method and apparatus for automatic load testing using...
Method and apparatus for automatic load testing using...
Method and apparatus for automatic monitoring of tectonic stress
Method and apparatus for determining shifts at terrain and in st
Method and apparatus for measurement of in-situ horizontal stres
Method and apparatus for measuring in situ earthen stresses and
Method and apparatus for measuring subsidence
Method and apparatus for subterranean load-cell testing