The YCJ static level system is a high-precision measuring instrument used to measure the changes in relative height differences. It is applicable to the long-term monitoring and measurement of vertical displacement among multiple points in geotechnical and structural safety engineering. The equipment uses high-precision pressure sensors to measure the relative liquid level height. The settlement amount is calculated based on the changes in liquid levels between the reference point and the observation point. It is mainly applied in vertical displacement monitoring of Bridges, tunnels, subways, DAMS, foundation pits, large storage tanks, etc.