The Shrinkage Channel is used to test grout and floating screed for shrinkage and expansion. Channel is made from stainless steel and the front has stabilizing claws. Measuring sample length is 1000mm. Channel width is 100mm at the top and 90mm at the bottom. Depth is 50mm. Includes digital gauge with data output. Measuring range is 12mm with an accuracy of 0.01mm.