This product is suitable for testing the shrinkage and expansion deformation of early-aged concrete or mortar in corrugated pipes, as well as for measuring the shrinkage and expansion deformation of concrete or mortar under unconfined conditions. It is equipped with a high-precision eddy current sensor, an 8-inch embedded Linux industrial tablet computer with a touchscreen, 21-point calibration, and measurement accuracy < 2µm. Available in 6 to 12 specimen options.