The king or ruler among all Yantra is Sri Yantra . When it is set up on the back of the tortoise, then its power and auspiciousness increases. This divine tool is called Kuber Yantra or Tortoise Yantra. When Kuber Tantra kept at home and worshipped daily gives swift results in the form of monetary gain and all round prosperity.Tortoise Yantra is often called as Wealth Yantra or Laxmi Yantra. It enhances your career opportunities.