Round acceptance display ray film evaluation tool

The utility model discloses a circular display acceptance radiographic film evaluation tool, which comprises a box body, scales, a spring and an adjusting screw, the box body is provided with accommodating cavities, each accommodating cavity is internally provided with a scale, one end of each scale extends out of the box body, the bottom of each accommodating cavity is provided with a fixing part, two ends of the spring are respectively connected with the fixing part and one end of each scale, and the adjusting screw is arranged on the box body. The adjusting screw is in threaded connection with the side wall of the box body. In a natural state, the scale retracts into the accommodating cavity under the elastic stretching of the spring; in the measuring state, the end of the adjusting screw penetrates through the side wall of the box body to abut against the ruler, the length of the part, extending out of the box body, of the ruler can be fixed, and scale marks, measuring round holes and a defect distributio