Before using any graph, you must calibrate your pendulum. Place the pendulum over the "Neutral" or "0" zone. Ask: "Is my energy field aligned for this reading?" Wait for a neutral swing. If the pendulum does not stay still or makes erratic movements, you are not ready.
If you have the exact book title or year, I can perform a deeper academic or archive search. graficos radiestesia antonio rodrigues pdf
This article provides an overview of the seminal work on radiesthetic graphs by António Rodrigues Before using any graph, you must calibrate your pendulum