Pendulums are great tools for accessing the intuition. For divination purposes, hold the pendulum above your palm, ask it to show you a "yes" and observe its movement. It could move back and forth, side to side, clockwise, counter-clockwise, etc. Once you've noted its movement, steady the pendulum. Now ask it to show you a "no" and observe its movement again. At this point you can ask a yes or no question and you will know the answer based on the movement of the pendulum.
chain is 6" and pendulum is 1.25"