K.Selvaraj, R.Karthikeyan, C.E.Sabarinath, B.Santhosh and S.Sasikumar 2021. Improving production rate by modification of angular drill jig. International journal of intellectual advancements and research in engineering computations. 8, 3 (May 2021), 404–410. DOI:https://doi.org/10.61096/ijiarec.v8.iss3.2020.404-410.