The first edition of Instrumentation, Measurements and Analysis was first published in 1985 and the second and third editions were introduced in 2004 and 2009 respectively. This well-known book on Instrumentation, \nMeasurements and Analysis encompasses the three components \n1) Instrumentation Principles \n2) Measurement Techniques \n3) Data Analysis Syllabi of most courses of Instrumentation/Experimental Methods for various Undergraduate and Postgraduate disciplines comprises of all three aspects. \nKeeping in view the above mentioned requirements, the authors have revised this edition, based on their wide and long standing experience in teaching, and research in this interdisciplinary field of instrumentation.