3.1 The Electromechanic Analogies
3.2 The Electroacoustic Analogy
3.3 Levers and Transformers
3.4 Rules for Deriving Analogous Electric Circuits
3.5 Synopsis of Electric Analogies of Simple Oscillators
3.6 Circuit Fidelity, Impedance Fidelity and Duality
3.7 Examples of Mechanic and Acoustic Oscillators