The Library Kids : Kali and Her Yantra

Kali is a mother goddess who is the consort of Shiva. She is a destroyer of demons and her consort Shiva layed before her on the battle field to calm down her rage.

Her Yantra is an instrument that is said to contain energy that pertains to her. I am still learning about this Hindu Yantra concept, but it appears to be a symbolic representation of the god/goddess.

According to wikipedia:

Yantra (यन्त्र) is the Sanskrit word for "instrument" or "machine". Much like the word "instrument" itself, it can stand for symbols, processes, automata, machinery or anything that has structure and organization, depending on context.

One usage popular in the west is as symbols or geometric figures. Traditionally such symbols are used in Eastern mysticism to balance the mind or focus it on spiritual concepts. The act of wearing, depicting, enacting and/or concentrating on a yantra is held to have spiritual or astrological or magical benefits in the Tantric traditions of the Indian religions.

Yantra function as revelatory conduits of cosmic truths. Yantra, as instrument and spiritual technology, may be appropriately envisioned as prototypical and esoteric concept mapping machines or conceptual looms. Certain yantra are held to embody the energetic signatures of, for example, the Universe, consciousness, ishta-devata. Though often rendered in two dimensions through art, yantra are conceived and conceptualised by practitioners as multi-dimensional sacred architecture and in this quality are identical with their correlate the mandala. Meditation and trance induction that generates the yantra of the subtle body in the complementary modes of the utpatti-krama and saṃpanna-krama are invested in the various lineages of tantric transmission as exterior and interior sacred architecture that potentiate the accretion and manifestation of siddhi.