Crack Controller-Tester TP21 from AVONGARD is for crack control on flat surfaces and measuring with calipers. The device can be fixed to the surface using 4 pcs.screw / dowel set or special quick-hardening glue available separately. It is possible to print a sample measurement log from the manufacturer's website free of charge.
The TP21 is a model for controlling the movement of building structures in two directions (up / down and right / left).
Simple fixed TP21 sensor with glue or 4 pcs.screws.
The deformation (displacement) is indicated by the relative displacement of the measuring scale on the scale (40 x 20 mm).
In addition, more precise crack control can be performed using a caliper and measure the distance between the special pins in the crack controller.