TD11 - AVONGARD Displacement Tell-Tale - Crack Monitor
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AVONGARD - TD11 Displacement Tell-tale
The Avongard Displacement Tell-Tale monitors horizontal and displacement movement where there is a “step” across a crack due to displacement or “out of plane” movement.
The Tell-Tale consists of three components. A base plate (not calibrated), a top plate (calibrated) and a graduated ruler. The ruler is removed from the gauge when not taking a measurement but used to measure the relative movement in the plates.
- Calibrated in millimetres.
- Fix using Screws and Adhesive (not included but available as accessories).
- Supplied with full instructions and Crack Record Sheet.
Application: Monitoring of crack displacement on concrete or walled structures.
Range: 110 mm vertical and -10 to 50 mm horizontal
Accuracy: ±1.0 mm on scale
Temperature: -40 to +80 degrees C.
The coefficient of thermal expansion is 6.8 x 10-5 cm/cm per degree C.