The point rail is an important part of the switch. The train is guided to the main line or the side line by the movement of the point rail. As railway transportation continues to develop towards high speed and heavy load, the wear and scrapping of the switch point rails has accelerated, especially the side wear of the point rails is more serious. It is necessary to measure the wear state of the point rails frequently and give maintenance suggestions for grinding or replacing the point rails. There are many types of point rails. Measuring different side wear, vertical wear, and reduction values of point rails requires corresponding detection rulers of different types. There is no universal measuring tool. This product can be used to measure the side wear, vertical wear, and reduction values of all types of point rails.