One of the most beloved sections is how to balance a fan using only a vibration meter (amplitude only) and a stopwatch—relying on the "three-point method" (balancing by trial and error with markers on the fan hub). This is vintage Wowk pragmatism.
, Wowk teaches how to read a machine’s "vibration signature" using transducers like accelerometers and velocity pickups. About Us - Machine Dynamics machinery vibration balancing victor wowk pdf