A Yantra is usually linked with a particular deity and is used for distinct purposes such as meditation, pujas, tantrism, the attraction of wealth and success.  Numbers of geometric shapes and images along with mantras from the Yantra. The central point of almost all yantra is Bindu, a small red dot. The triangles are also important symbols representing Shiva and Shakti. The concentric circle represents the manifestation. Here's what a great meditation master, Ivan Rados has .