The level’s real skill is disproof, so the book is built around it: what each technique can establish, what it cannot, and how a confident reading is tested before anyone acts on it.
Rotor dynamics, torsional vibration and bladed machinery each get their own treatment with the arithmetic worked, and the closing chapter traces four failures from the symptom through the wrong first reading to the outcome.
Study material written by Sensemore. It is not accredited training, it is not from any certification body’s question bank, and it confers no certification.