I have been using a pendulum as a wa of accessing channelled information for years.Choosing one that feels right in terms of weight and alignment is a personal choice. Beginner's Guide to Pendulum Dowsing
This is a picture taken of a Russian Soldier supposedly using the dowsing rod for whatever purpose. Russia was a very strong believer in metaphysics and said this method could be used to find water, determine where to set up a camp, find a lost artifact, or, as part of a very long tradition, to determine where to best to place your largest cannon before battle for good luck (a tradition started in the 1500s.)
Merkaba Pendulum \ Pendulums have been used since ancient times as dowsing tools to locate water, metals or ores, gemstones, oil, graves and other objects and materials. Healers use a pendulum to locate problems areas on the body and psychics may use a pendulum while communicating with spirits. The pendulum is also used to delve into your Higher Self to reveal answers to your innermost questions.