This machine is used to test the expansion and shrinkage features of   metal, ceramic, glaze material, fire-resistance material and other non-metallic materials during baking. It is also suitable for GB/T3810.8-2006 、ISO 10545.8-1995 tile thermal expansion coefficient testing. CPZ intelligent expansion instrument can auto control the temp. , record, save and print datas, temperatures and the expansion coefficient curve. The whole test will be finished by the computer.