The basis of this new semi-automatic levelling method is to replace active mires with a linear measuring system instead of ordinary mires. These mires have a movable target that is fitted along the axis of vision by levelling operator and with the help of a wireless control system. The target place can be adjusted with great precision, and its position on the measurement table can be measured and recorded by an automatic system. After correction, these measurements are transmitted to levelling device for further processing. The features of this new design include collecting and automatically recording information, instantaneous analysis and display of collected information, accuracy at the level of first-rate levelling, and increase in the speed of measurement.