Auxiliary calibration tool for height of supporting rod

The utility model provides an auxiliary calibration tool for the height of a supporting rod. The auxiliary calibration tool comprises a supporting base, a U-shaped ruler, a movable calibration rod, a fixed knob, an indicating sign, a gradienter and a degumming machine table process cavity. Wherein the supporting base comprises a hollow part; the U-shaped scale is fixed on the supporting base and comprises a graduated scale part with a plurality of scale marks, a top part and a position range identification part, and an opening of the U-shaped scale corresponds to the hollow part; the movable calibration rod is located in a gap between the hollow part and the position range identification part and between the calibrated scale part and the position range identification part; the fixed knob is fixed on the movable calibration rod; the indicating sign is fixed on the movable calibration rod through a fixed knob; the gradienter is fixed at the top end; the degumming machine table process cavity comprises a plurali