The Word "Yantra" means an "instrument" or "machine" or "talisman" depending upon the context. An yantra can be described as a very complex engine of energy containing nested geometry figures , arrays of mystic patterns and a series of ancient hyper sigils laced with archetypal designs and numerical shapes . They are esoteric energy concept mapping machines . Most of the yantra are conceived and conceptualized through revelation and clairvoyance by higher light energy beings.