Hot-rolled section steel leg end passivation radian measuring device

The utility model relates to the technical field of hot-rolled section steel production, in particular to a hot-rolled section steel leg end passivation radian measuring device which comprises a positioning frame, a probe box, a measuring instrument body, an outer probe and an inner probe, a flexible ruler is arranged on the inner side of the positioning frame, and a sliding groove is formed in the lower end of the positioning frame. A sliding groove is formed in the upper end of the positioning frame, a flexible rule sliding opening is formed in the position, located at the upper end of the sliding groove, of the inner side of the positioning frame, a spring is arranged in the sliding groove, scales are arranged on the upper side of the flexible rule, a positioning screw is arranged on the outer side of the positioning frame, an adjusting plate is arranged on the lower side of the positioning frame, and an adjusting screw rod is installed on the inner side of the adjusting plate. The radian is measured throu