The pendulum is basically an amplifier. It is a tool that assists you in accessing the collective unconscious and your Higher Self.They are often used as tools for spiritual healing and inner growth.
The best shape for the weight is something that comes to a point. The best length for the pendulum is six inches
Think of the pendulum as an extension of the intuition .It is used to gain access to information that exists at the subconscious level your Inner Being. It assists in strengthening and amplifying your intuition.
When you ask a question of the pendulum, it is your own intuition that answers it.
The pendulum assists you in seeing what your intuition already knows. Because it is an extension your intuition, the pendulum can give you information from from your own subconscious mind; and from your guidance, spirit, or guardian angel. The pendulum can only answer questions that are phrased so that the answer is either “yes” or “no”.