Yantra

Yantras are used for the worship of deities in temples or at home; as an aid in meditation; and for the benefits believed given by their occult powers based on Hindu astrology and tantric texts.

[5] Mantras, the Sanskrit syllables inscribed on yantras, are essentially "thought forms" representing divinities or cosmic powers that exert their influence by means of sound-vibrations.

The literal meaning is still evident in the medical terminology of Sushruta, where the term refers to blunt surgical instruments such as tweezers or a vice.

[7] Yantras are usually associated with a particular deity and are used for specific benefits, such as: for meditation; protection from harmful influences; development of particular powers; attraction of wealth or success, etc.

A yantra typically has several geometric shapes radiating concentrically from the center, including triangles, circles, hexagons, octagons, and symbolic lotus petals.

[10] Occult yantras are used as good luck charms, to ward off evil, as preventative medicine, in exorcism, etc., by virtue of magical power.

It consists of sacred geometrical, animal and deity designs accompanied by Pali phrases that are said to offer power, protection, fortune, charisma and other benefits for the bearer.

[16] The world’s largest Sri Chakra, measuring 67,400 sq ft was drawn on ground in Cranbury, New Jersey under the guidance of Guru Karunamaya.