Portable water conservancy and hydropower detection ruler

The utility model discloses a portable water conservancy and hydropower detection ruler which comprises a length measuring mechanism and a fixing ring installed at the center position in the length measuring mechanism, an angle measuring mechanism is arranged at the center position of the back of the length measuring mechanism, and an angle pointer is arranged in the angle measuring mechanism. The length measuring mechanism comprises a first measuring sub-ruler and a second measuring sub-ruler, first scales are fixedly installed on one side of the top of the first measuring sub-ruler and one side of the top of the second measuring sub-ruler, a fixing ring is fixedly installed at the right end of the first measuring sub-ruler, and a meshing gear ring is fixedly installed on the front face of the fixing ring; by arranging the length measuring mechanism, the length and the height of the water conservancy and hydropower engineering can be measured, meanwhile, telescopic adjustment of a meshing rack can be achieve