Multipurpose drawing rule

The utility model relates to a multi-purpose drawing ruler, which belongs to the field of stationery. The utility model comprises a knife, a semicircle plate, a ruler plate, a curved plate and a rivet shaft. The semicircle plate is integrated with the ruler plate and the curved plate, a narrow slot to contain the knife is arranged at the side face, and the whole drawing ruler is U-shaped. The knife has a hole at one end. The rivet at the center of the semicircle plate is passed through the hole to fix the knife. The knife has a hole at one end, and the center of the hole is on the line of the back edge of the knife. The knife is centered with the rivet shaft and can be rotated within a range of 180 degree. The knife is a combined ruler including a semicircle and a straight ruler after folded. The semicircle can be used to measure angles, and the straight ruler can be used to draw straight lines. When the knife is unfolded, the cutting edge can be used to pare pencils, and the back edge can be used to draw angle edges. The utility model can be used not only to draw various curves and images, but also to pare pencils. The utility model is also featured with reasonable structure and convenient use.