Measuring device for constructional engineering

The utility model relates to the field of measuring tools. The invention particularly relates to a measuring device for constructional engineering. The ruler comprises a ruler rod, connecting rods andvertical rods, one side end of the ruler rod is hinged with one end of the connecting rod; the other end of the connecting rod is hinged with the vertical rod; the other end of the vertical rod is connected with a conical counterweight hammer; the tip of the conical counterweight hammer faces downwards and is provided with a laser emitter; a limiting block perpendicular to the ruler rod is arranged on the ruler rod; the limiting block can limit the connecting rod to rotate to a position perpendicular to the ruler rod to the maximum extent; scales capable of displaying the inclination of the measured object are arranged on the surface of the ruler rod; a first mounting hole is formed in the bottom surface of the ruler rod; a positioning piece is detachably connected into the first mountinghole; a connecting block