South, Where Mars And Sun Both Become Directionally Strong Requires A Very Protective Yantra. Copper Bhaum Yantra Is Used For Vastu Defect Related To South Direction. Bhaum Yantra Made In A Copper Works Like A Shield Against The Severe Vastu Defect. Location Of The Main Door / Depression . Bore Well At The South / Open Space At South How To Install This Yantra Can Be Concealed In The Southern Wall Construction Or It Can Be Hanged On The Wall Itself.