The multi-function measuring scale can be used as protractor scale, Y spool, function drawing slot, circle hole with radius mark, X spool, polygonal hole, circle arc, short-drawn wire slot, active short ruler, parallelogram, built-in triangle ruler, oval hole, straightedge, etc.The edge and surface of the multifunctional ruler are polished carefully, smooth to touch, no odd smell, providing you with a comfortable use experience. Various shapes can be drawn, the scale is clear, the sliding is convenient, the drawing is stable, it is not easy to be skewed, and it is easy to observe.