The measurement method of the NELD-TS700 Contact Shrinkage Deformation Measurement Device is suitable for determining the shrinkage deformation properties of hardened concrete specimens under unconfined and specified temperature and humidity conditions. Our company's deformation measurement device developed for hardened concrete features a low deformation stainless steel bracket, a fully chrome-plated fixed base plate, equipped with a micrometer adjustment device, precise installation clamps, offering ease of installation, scientific structure, and high measurement accuracy, eliminating measurement errors caused by specimen replacement for the user.