Sampurna Navgrah Yantra Is A Combined Yantra For All The Nine Planets. This Yantra Is Divided Into Nine Squares, Each One With A Talisman Representing One Planet. Sometimes More Than One Planets Are Adversely Placed In Ones Horoscope Or At Times The Correctness Of The Horoscope Is Doubtful Due To Non-Availability Of Authentic Data. Navgraha Yantra Should Be Worshipped Throughout One'S Life To Ensure Maximum Benefits From The Planets.