Precision inspection device for fan-shaped section carrier roller and adjustment method

The invention relates to a precision inspection device for a fan-shaped section carrier roller and an adjustment method. The device comprises an arc alignment sample ruler, two fixing bases, a light source projection device and a receiving plate, the light source projection device and the receiving plate are arranged on the fixing bases respectively, the fixing bases are detachably arranged at thetwo ends of the arc alignment sample ruler respectively, and the fan-shaped section carrier roller is arranged between the two fixing bases and is close to the arc alignment sample ruler; the light source projection device comprises a supporting base, an adjusting supporting rod, a sliding rail supporting rod and a reflecting mirror, the supporting base is fixed to the fixing bases, the reflecting mirror is hinged to the supporting base, one end of the adjusting supporting rod is hinged to the supporting base, the other end of the adjusting supporting rod is fixedly connected with the slidingrail supporting rod, and