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A study of the detailed working of the products of Engineering Colleges revels that Engineers have to work on various jobs in the field, industry as well as in testing laboratories, design and manufacturing of instruments and on control panels, where he/she performs the duties of procurement, designing manufacturing, installation, operation, maintenance and testing of measuring instruments. Persons working on control panels in Power Plants, Substations and in Industries, will come across use of various types of instruments and has to take measurements. In this book the topics like Philosophy of measurement, Units, dimensions and standards, Measure system fundamentals, Analog measurement of Electrical quantities, Instrument transformers, Potentiometers, Measurement of Resistances, A.C. Bridges, Polyphase metering, Magnetic measurements, Digital measurement of Electrical quantities, Cathode ray oscilloscope, Recorders and Telemetry, Transducers have been dealt from simple to complex to build the subject matter in the lucid way and create interest amongst the readers for the subject. The subject of Electrical Measurements and Measuring Instruments is very vast and its complete study itself is an branch of Engineering itself but the main aim of this book is to build the subject in the mind of readers from the Basic Fundamentals of Measurements and Measuring Instruments. For this purpose to make the subject matter really useful the standard text books, periodicals, and publications of the A.I.E.E, ISI standards and test codes have been freely consulted to make this book useful to the students of B. E. and B. Tech. of various Indian Universities. Syllabi and previous question papers of various universities like H. P. University, Punjab Technical University, I. P. University, UP University, Madhya Pradesh University, Mumbai University etc. have been frequently referred while preparing this book. Number of basic principles, fundamental equations and number of different numerical problems have been solved and added in this book to familarise the readers with different aspects of the subject. The number of experiments are also added as the last chapter in this book to facilitate the readers.