Based on recent studies on rock socketed drilled shafts, the side resistance of rock socketed drilled shafts was affected by unconfined compressive strength of rock as well as borehole roughness. Since existing roughness measurement systems could be conducted only in the air, a new roughness measurement system, which can measure rock socket roughness in the air and also in the water, has been needed, and developed in this study as called the BKS-LRPS(Backyoung-KyungSung Laser Roughness Profiling System), For the field verification of the BKS-LRPS, it applied to measure borehole roughness and vertical alignment on 6 drilled shafts in order to verify the stability of the BKS-LRPS against several field conditions, which were the effect of measuring unit shaking, the application of water/air calibration factors, and the resistance of high water pressure inside piles, and various turbidity. Based on the results of the field verification, vertical alignments for all drilled shafts could be measured by the BKS-LRPS. However, borehole roughness was not able to measure due to high turbidity caused by RCD drilling processing. Based on the BKS-LRPS field verification, the BKS-LRPS is the first borehole roughness and vertical alignment measurement system applying both in the water and air.