在使用某种规格的内径千分尺时,一般需与外径千分尺校对。当量杆的中心托架宽度接近于外径千分尺量杆时,在校验时,外径千分尺与中心托架相碰,影响校验的正确性。为了在校验中能得到正确的数值,把量杆的中心托架, In the use of a standard diameter micrometer, the general need to calibrate with the micrometer diameter. When the center bar width of the equivalent bar is close to the bar size of the outer diameter micrometer bar, the outside micrometer will collide with the center tray during calibration, which will affect the correctness of the verification. In order to get the correct value in the calibration, the amount of rod center bracket,