Introduction to Noise Measurement, Chapter 5 of Arthur Kay’s publication, Operational Amplifier Noise, introduces the different types of equipment used for measuring noise including True RMS DMM, Oscilloscope, and Spectrum Analyzer. Specifications and modes of operation pertinent to noise measurement are discussed. Although specific models of equipment are considered, the concepts can be applied to most equipment. Clear, definition-by-example presentation and figures allows for immediate use of techniques introduced by author’s decades of experience.