Multipurpose rule gage

The utility model provides a multipurpose rule gage, which is composed of four rulers, and the inner side and the outer side of each ruler are marked with scales. The utility model is characterized in that the both ends of each ruler are provided with an internally tangent circumference which is marked with degrees, and the center of circle is provided with a small hole in which a screw can be inserted; the middle point of the central cross-cutting position of the ruler is provided with a perpendicular bisector, a sliding slot is arranged between the middle point and the center of circle of one end of the ruler, a cross-cutting middle line is arranged between the middle point and the center of circle of the other end of the ruler, and the middle line is provided with a plurality of small holes. The utility model combines the functions of a compasses, a ruler, a protractor, a triangle, etc., the utility model can be used for constructing a plurality of polygons, the utility model is simple in mapping and has high efficiency, and the utility model can be used as a replacement of the existing teaching mapping tools.