This Yantra is used to appease the planet Buddha or Mercury. When Mercury is afflicted the use of Mercury Yantra (Budh Yantra) is very beneficial and favourable. This Yantra protects from fire and electric loss etc. it is specially favorable for a pregnant woman against abortion and for the safe delivery of child. It is embossed on copper plate. This is very useful for people darling with mathematics, commerce and communication and also for business. It removes the ominous effect on the person. It should be kept on rising Moon Wednesday.