Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Hellmut Wolff (30 March 1906 – 22 March 1986), was a German academic, mystic, Germanic revivalist, and most notably a Pendulumdowser. He was used by the German military during the Third Reich.
Wolff was mentioned throughout the book Reveal the Power of the Pendulum by Karl Spiesberger.