During a Bovis-"measurement" the dowser is walking around the place or approaching a particular object with an object (a pendulum, biotensor or "biometer"). The "measurement" is finshed, when the dowser declares the local Bovis number (''"this place has 18000 Bovis"''). Sometimes a second person is douncounting from a high number until the dowser asks him to stop counting and to tell the actual number.
A number of 6500 is considered "neutral", lower figures affect human "energies" negatively, higher numbers positively. Numbers above 10,000 are in the "ethereal range" and considered to be [[Plce of Power|Places of power]] .