Soil Instruments manufacture a range of extensometers for measuring soil compression, settlement and heave of soil and rock in tunnels, shafts and foundations, and ground movement in boreholes.
Digital Tape Extensometer
For quick and accurate measurement of relative distances between pairs of reference points on the surfaces of structures including radial movements and convergence of tunnels, shafts, linings and caverns.
E17 Rod Extensometer System
The Rod Extensometer system accurately measures settlement and/or heave at single or multiple anchor points in a borehole relative to it’s reference head.
Magnetic Probe Extensometer
The Soil Instruments Magnetic Extensometer is used to monitor soil or rock settlement and heave in excavations, foundations, dams, and embankments, tunnels, shafts and sheet piles.
Vibrating Wire Soil Extensometer
The Vibrating Wire Soil Extensometer measures lateral deformation of soil and rock, particularly in embankment dams and quarry or mining excavations.