Rod Extensometers serve to measure lengths between one or more anchor point and a reference head.
The Rod Extensometer system accurately measures settlement and/or heave between single or multiple anchor points in a borehole and at its reference head.
The system employs up to eight rods, anchored along the axis of a borehole, terminating in the reference head at the borehole entrance.
The Rod Extensometer is isolated from the backfill material by a protective sleeve that ensures its free movement.
Displacement along the axis of the borehole from the anchor is recorded by measuring movement of the top of the rod relative to the reference head.
There are a versatile range of options for Rod Extensometers: