Yantra is the source of energy of 5 elements- Earth, Air, Fire, Water and Sky. It is very useful for meditation, protection from harmful influences; development of particular powers; attraction of wealth and success, etc.
Even yantra has many of its type, like-
- Sri Yantra used for learning, Wisdom, Creativity, Finance, Beauty, Spiritual enrichment, etc.
- Mahalaxmi yantra used for wealth.
- Gayatri yantra for energy.
- Durga yantra for get rid of all the problems.
- Nav-durga yantra for power and success
- Kamla yantra for wealth and many more are used.