Small pendulums have become prevalently used in dowsingradiesthesia, and related divination systems which once employed diving rods.

Questions are so phrased as to acquire answers by the clockwise and counterclockwise movements of the pendulums. These movements have the similar function as the raps given in a Spiritualist seance.

Early forms of pendulums used in divination consisted of a wedding ring suspended from a sick thread. Currently, however, the practice of radesthesia obtain subtle prognostications from the pendulum’s oscillations. This practice is being used in water diving, discovery of metals, medical diagnosis, and discovery of missing persons. A.G.H.

Source: 9.