JIC_V3_N4_CS1 K. Prakash Babu A. Chandini Priyanka K. Sahithi K. Kavyasri Journal on Instrumentation & Control Engineering 2321–1148 3 4 36 50 Gauge Repeatability, Reproducibility, Cylinder Liner Measurement data are used more often and in more ways than ever before. The decision to adjust a manufacturing process is nowadays mostly based on the measurement data. Hence, the decision to change a process is purely dependent on the quality of data we acquire. Higher the quality of data, greater is its reliability. A change in process which relies on the low quality data would obviously produce defective components which are a result of wastage of capital, labour, and time. Hence, the need for data with reasonable quality levels is felt. In the present work, the authors have assessed the validity of some measuring instruments which are used to measure some of the critical parameters of cylinder liners making use of certain gage characteristics like Repeatability and Reproducibility which capture the precision of a measuring instrument. The work was carried out at Kusalava International Limited which is currently one of the largest, leading International manufacturers of Centrifugal Cast Cylinder Liners. This study helped to make necessary modifications in the measuring equipment, so that the measurement data obtained from measuring instrument will be reliable. August - October 2015 Copyright © 2015 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=3724