Instrumentation: Operation, Measurement, Scope and Application of Instruments, provides various concepts, theoretical and practical knowledge and develops the techno-managerial skill in the field of instrumentation. Various possible methods of measurements of commonly used instruments for measuring various quantities often used in engineering and design are provided, presented and discussed sufficiently from fundamentals to advancements. It aims at providing an insight into various concepts and awareness as well as developments of the field. Numerical problems and examples and usual situations that occur in industries and daily life are presented as necessary.