ESM-30V is a high sensitivity liquid level settlement measuring system that uses low range vibrating wire force transducer with a submersible cylinder suspended in a fluid filled vessel. It is designed for remote measurement of minute differential settlement in tunnels, bridges, and buildings, etc. with high precision. Settlement of any vessel installed, causes a change in its fluid level, affecting the buoyancy on the suspended cylinder. The ESM-30V is provided with two or more settlement systems with fluid filled vessels interconnected in series by a fluid filled tube.