Water level depth measuring instrument

The utility model relates to the technical field of water depth measurement, in particular to a water level depth measuring instrument. According to the technical scheme, the device comprises a detection plate, a connecting disc and a fixing plate, a sliding rail is arranged in the detection plate, a sliding block is slidably installed in the sliding rail, a connecting plate is fixedly connected to one side of the sliding block, a depth measuring plate is fixedly connected to the bottom of the connecting plate, and a sinking plate is fixedly connected to the bottom of the depth measuring plate; a threaded plate is fixedly connected into the fixing plate. The slide rail is arranged in the detection plate, when the device is used, a worker can pull the connecting disc to drive the pull rod to stretch out and draw back in the detection plate, the device is driven to measure different water depths, in addition, the child slide block can slide in the slide rail, the smooth effect of the device is improved, and the