Tool ruler capable of being used for gradient measurement

The invention relates to a tool ruler capable of being used for slope measurement, belongs to the field of building construction, and provides the following technical scheme for solving the problems that in the excavation process, a measurer needs to place slope bottom and slope top excavation lines for multiple times to check whether a slope surface is excavated in place or not, the measurement process is complex, time consumption is large, and the construction progress is slow. According to the technical scheme, the device comprises a horizontal ruler and an inclined ruler, a level bubble is fixedly arranged on the horizontal ruler, one end of the horizontal ruler is rotationally connected with the inclined ruler, the other end of the horizontal ruler is a free end, an included angle is defined by the horizontal ruler and the inclined ruler, and an adjusting assembly used for adjusting the size of the included angle is arranged between the horizontal ruler and the inclined ruler. The method has the advantag