Yantra to appease the planet Bhudh or Mercury. When Mercury is malefic,
the use of mercury yantra/bhudh yantra is very benefic and favourable.
Mercury yantra/Bhudh yantra protects from fire and electric loss
etc. It is specially favourable for a pregnant woman against abortion
and for the safe delivery of child. It is embossed on Copper plate
and is to kept on rising moon Wednesday.