Roller length test fixture

The utility model discloses a roller length test fixture, which comprises a base, a front support plate, a movable support plate, a rear support plate, a sliding mechanism and a dial indicator, and is characterized in that the front support plate and the rear support plate are vertically fixed at the front part and the rear part of the base respectively, and the upper end of the front support plate is provided with a slot; the sliding mechanism is fixed on the base, a movable part of the sliding mechanism freely slides back and forth along the long edge direction of the base, the lower end of the movable supporting plate is vertically fixed on the movable part of the sliding mechanism, the upper end of the movable supporting plate is provided with a slot, a lower end fixing rod of the dial indicator is fixed on the rear supporting plate, and a measuring probe of the dial indicator is connected with the movable supporting plate. The roller length test fixture can effectively realize the length measurement proc