yantra is a sanskrit word that is derived from the root yam meaning to control or curb andtra meaning instrument. there are different shapes and patterns employed in a yantra which include squares, triangles, circles, floral patterns etc. there are various yantras in hindu mythology considered as auspicious. a sri yantra is the sound vibration of the cosmic om seen as a visual diagram. the following yantras are included in this shree sampurna mahayantra :- 1. shree yantra (centre) 2. sri kuber yantra 3. kanakdhara yantra 4. vyapar vriddhi yantra 5. surya yantra 6. shree brihaspati yantra 7. navgrah yantra 8. sri vastu maha yantram 9. vastu dosh nivaran yantra 10.sukh samruddhi yantra 11.sampoorna maha laxmi yantra 12. shree ganapati yantra 13.laxmi ganesh yantra.