DEPTH MEASUREMENT DEVICE

摘要

The present invention relates to a portable geothermal heat drilling depth measurement device comprising: a wire bobbin (10) having a first gear shaft (12) and a second gear shaft (14); a wire (20) unwound and wound around the wire bobbin (10); a weight body (30) having a stopper sensor (31); a power supply unit (42) supplying power to an electric motor (40); a control unit (50) electrically connected to the electric motor (40) and the stopper sensor (31); an encoder (60) transmitting a measurement value to the control unit (50); a display unit (70) where a length measured by the encoder (60) is displayed; an auxiliary rotating body (80) composed of an auxiliary gear (81) and a rotation unit (83); and a body (90).