Shani Yantra should be installed and worshipped to appease planet Saturn. As per Ancient Vedic Texts, Saturn is a Cruel planet. Astrologically, Saturn is the Lord of Zodiac sign Capricorn and Aquarius. It is Exalted in zodiac sign Libra and Debilitated in zodiac sign Aries. It is said that planet Saturn is a judge of our past deeds. The planet Saturn is a natural benefactor of jobs and services, metals, industries, age, poverty, hardships, diseases, all kinds of obstacles and selfishness. A person having weak or a malefic Saturn in his horoscope has to undergo sufferings in all his life and his progress is very slow even with a very hard work. However, if the planet Saturn is favourable in a person's horoscope then he can get very good Success, Name and Fame in his Business / Career especially in those areas that are governed by Saturn like industries. When Saturn is adverse, it causes many problems, accidents, conflicts, poor financial position, sorrow, sadness, depression, poverty etc. Under such circumstances, a Shani yantra can bring peace and comfort.