A new method of noncontact gauge block calibration using the fringe counting technique: II. Experimental verification

An experimental verification of a new noncontact interference method for gauge block or length bar calibration is presented. In this technique, the length of the tested artifact is measured by means of the counting fringe method. A new technique for central interference fringe detection is used for evaluation of the end surface positions of the measured artifact. The experimental set-up and length measurement procedure are described. Preliminary experimental results and uncertainty analysis of the proposed method are presented.