Calibration device and slitting machine

The utility model relates to the field of machinery, in particular to a calibration device and a slitting machine. The calibration device comprises a main body, a slideway and a water level. The upperpart and the lower part of the slideway are two semi-cylindrical surfaces of which the diameters are the same as those of an upper shaft and a lower shaft of the slitting machine. Openings of the twosemi-cylindrical surfaces face each other, generatrixes of the two semi-cylindrical surfaces are parallel to each other, and a plane where axes of the two semi-cylindrical surfaces are located is perpendicular to a plane where two straight line edges of any semi-cylindrical surface are located. The leveler is arranged at the top of the main body; and a horizontal reference surface of the leveleris parallel to the generatrix of the semi-cylindrical surface and perpendicular to the axis plane. On one hand, the semi-cylindrical surface with the same curvature as the upper and lower shafts in the slideway is matched, whet