6519* – Using a Pendulum — Asking a Rav and the Path of Torah and Mitzvos – שימוש במטולטלת — שאלת רב ודרך התורה והמצוה

From The Rebbe’s advice - Rabbi Chaim Wolosow by R Chaim Wolosow.

The Rebbe responds about the use of a pendulum for divining hidden information: he himself does not believe in it, but since "we have not seen" is no proof, the writer should ask a moreh hora'ah whether Shulchan Aruch permits it — and why seek new ways when Torah and mitzvah are a paved road?

https://www.torahrecordings.com/rebbe/igroskodesh/018/001/6519_star