The biotensor is an extremely sensitive measuring and testing device that can be compared to a dowsing rod or pendulum. It is a bio-energy test device, with which you can test your energy. The energy flow is made even more pure by the handle of rock crystal. Rock crystal is a strongly healing stone that helps against all kinds of ailments. This stone is also known to reinforce the action of other stones. It purifies and protects the aura from radiation, cleanses the chakras and brings them back into balance. Rock crystal regulates the flow of energy and gives vitality.