Extensometers

Geonor, Inc - Precision Instrumentation

Convergence Monitor

geonor_rst_Convergence_MonitorThe RST Convergence Monitor is an economical, robust instrument for the continuous or random monitoring of ground closure in mining and civil engineering projects.

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Crack Meters

geonor_rst_Crack_MetersCrack Meters are designed to measure movement across surface cracks and joints. Crack Meters are available in 3 versions: 3-D Crack Meters, Vibrating Wire Crack Meters and Electrical Crack Meters.

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Flexible Rod Extensometer

geonor_rst_Flexible_Rod_ExtensometerFlexible Rod Extensometers are a low cost, convenient instrument for the monitoring of ground displacements. Designed to withstand severe field conditions and accommodate transverse shear.

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Laser Distance Meter

geonor_rst_Laser_Distance_MeterThe Laser Distance Meter is a portable device designed to measure distances from the device to a remote target point located up to 500 meters distant.

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Rod Extensometer Single and Double Point

geonor_rst_Rod_Extensometer_Single_and_Double_PointThe Single Point Rod Extensometer is an inexpensive, simple, rugged, and reliable device to monitor deformation in under ground workings. The Double Point Extensometer incorporates the use of two points which allows the engineer to distinguish between dangerous deep seated movements and more trivial surficial spalling.

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Rod type Multiple Point Borehole Extensometer

geonor_rst_Rod_type_Multiple_Point_Borehole_ExtensometerMultiple Point Borehole Extensometers measure the stability and movement behavior of soil and rock masses.

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Soil Extensometer

geonor_rst_Soil_ExtensometerThe RST Vibrating Wire Soil Extensometer is developed to monitor lateral and longitudinal deformation of soil and different types of embankments and embankment dams.

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Tape Extensometer

geonor_rst_Tape_ExtensometerThe RST Tape Extensometer is a portable device, designed to measure the relative distance between reference anchors fixed to the excavation or structure.

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Tell Tale Crack Meters

geonor_rst_Tell_Tale_Crack_MonitorsTell Tale Crack Monitors measure displacement (out of plane) and movement across a crack.

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Tunnel Profile Monitoring System

geonor_rst_Tunnel_Profile_Monitoring_SystemThe Tunnel Profile Monitoring System is a series of linked rods, fixed to the tunnel wall, to monitor deformation. A data logging system and related software is available to provide near real time displacement and generate a graphical representation of tunnel performance.

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Vibrating Wire Joint Meter

geonor_rst_Vibrating_Wire_Joint_MeterThe RST Vibrating Wire Joint Meter is developed to monitor joints of mass concrete structures.

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