The pendulum is the easiest method of divination, based on YES or NO answers.
A pendulum is a pivot-weight suspended object to allow it to swing freely. The regular motion of pendulums was used for timekeeping from Galileo Galilei's first scientific investigations of the pendulum around 1602 and was the most accurate timekeeping technology in the world until the 1930s.
Do we get answers through magic? Through spirits? By the power of psychology? The pendulum of dowsing works by connecting us to the unconscious mind, also known as the Akashic records. By influencing the nerve endings in our fingers causing the pendulum to swing in response, our unconscious mind responds when we ask a question. In other words, our body expresses our inner knowledge externally.
Amethyst pendulum on a chain.