Power value calibration anchor clamps of wet type superficial hardness meter

The utility model discloses a power value calibration anchor clamps of wet type superficial hardness meter, including adjusting nut, key, backup pad, support column, spring, base, the middle part of base is provided with the counter bore, and the support column is connected in the bottom of counter bore, and spring suit is on the support column, and the upper end of support column is equipped withthe external screw thread, is provided with first keyway on the outer wall of support column, the middle part of backup pad is provided with the installation sleeve, and the installation sleeve is opened there is the installation hole, and it has the second keyway to open in the installation hole, the tip position of backup pad is provided with your supported hole, and the upper portion at the spring is pressed to the support column suit on the installation hole, the key is installed in first keyway, second keyway, fixes the backup pad on the support column, adjusting nut installs on the external screw thread of supp