Slope protection masonry flatness measuring instrument

The utility model discloses a slope protection masonry flatness measuring instrument, which belongs to the field of engineering measurement and comprises a measuring long plate, supporting columns are fixedly mounted at four corners of the lower end of the measuring long plate, first universal wheels are fixedly mounted at the lower ends of the supporting columns, and second universal wheels are fixedly mounted at the lower ends of the first universal wheels. A plurality of flatness detection assemblies which are transversely distributed in an array mode are movably inserted in the measuring long plate, each flatness detection assembly comprises a movable rod, a second universal wheel and a baffle, and the multiple flatness detection assemblies which can move in a lifting mode are arranged in the measuring side plate, so that the measuring long plate is placed at the upper end of a slope protection masonry, and the flatness detection assemblies can be used for detecting the flatness of the slope protection ma