Vastu yantra is a scared object that negates the defects and negative effects of Vastu dosha at a respective place. The yantra is usually made of any royal treasure or metal for instance gold, silver or copper and helps in discarding ill aftermaths of wrong placement of house or any of the Vastu dosha.
Vaastu yantras are specifically designed for rectifying the faults of a building, site, home or office due to wrong construction or creation