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Contact SupplierThe SIS-7000 Series Borehole Extensometer Electrical/Mechanical (E/M), single or Multi-Point Borehole Extensometers are used to accurately measure longitudinal displacement in rock masses or concrete boreholes. It is particularly useful for distinguishing deep seated movements from surface spelling, which is of value in assessing the need for or determining the efficiency of a rock bolting system.
The rugged low cost rod extensometer is designed to be easily installed in difficult locations.