Part one - general and theoretical chapter I instrumentation and measurements

Several books on basic circuit, field, and measurement theory have been published. An informative book dealing with microwave theory and technique by Reich, Ordung, Krauss, and Skalnik (1) has appeared. While it is primarily a text book, it is also a useful reference book on transmission-line and wave-guide theory, measurements, components, oscillators, and amplifiers. Ramo and Whinnery (2) have published a second edition of their excellent book on microwave field theory which includes a chapter on resonant cavities. In an important book on electrical measurements Karo (3) thoroughly discusses circuit elements, bridges, and associated instruments used at relatively low frequencies. The errors in a-c bridges are also discussed in detail.