chandra yantra Budh yantra is used to appease the planet buddha or mercury. when mercury is afficted the use of mercury yantra( budha yantra) is very beneficial nad favourable budha yantra protects from fire and electric loss etc. Budha yantra is specially favorable for a pregnant woman against abortion and for the safe delivery of child. Budh yantra is embossed on copper plate. Budh yantra is very useful for people darling with math-matics, commerce and communication and also for bussiness. Budh yantra removes the ominous effect on the person. Budh yantra should be kipt on rising moon wednesday. Budh yantra should be worshipped on wednesday after washing it with holy water and by reciting the following mantra 900 times.