Steel rail head width inspection template

The utility model relates to a steel rail head width inspection template, and belongs to the field of steel rail inspection. The steel rail head width inspection sample plate comprises a sample plate body, a negative sample plate line and a positive sample plate line are arranged on two opposite sides of the sample plate body respectively, each of the negative sample plate line and the positive sample plate line comprises a straight line section and two arc lines connected with two ends of the straight line section, and dots of the two arc lines are located outside the body. The negative sample plate line and the positive sample plate line are respectively provided with a first convex point and a second convex point. The first convex point is positioned at the middle point of the straight line section; the second convex points are positioned on the arc lines; the protruding directions of the first protruding points and the second protruding points are far away from the sample plate body. According to the util