Portable water level measuring instrument

The portable water level measuring instrument comprises a machine body, an electric wire, a wiring hole and a weeding knife, the wiring hole is fixed to the middle of the top end of the machine body, the electric wire is arranged in the wiring hole, limiting baffles are welded to the left side and the right side of the machine body respectively, and a protective cover is arranged at the top end of the machine body. Second sliding rails are arranged on the left side and the right side in the protective cover correspondingly, second sliding blocks are arranged in the second sliding rails correspondingly, and the second sliding blocks are rotationally connected with the rotating rods through rotating shafts correspondingly. According to the utility model, through the rubber sealing ring arranged in the middle of the top end of the protective cover and the internal soft rubber sleeve, when the wiring part of equipment is collided, the soft rubber sleeve in the protective cover buffers the wiring port of the equip