Yantra is a sanskrit word that is derived from the root meaning "to restrain, curb meanings for the noun derived from this root include "that which restrains or fastens, or support", "a fetter", "any instrument or machine", "an amulet, a mystical or astronomical diagram used as an amulet.
It is a part of occult science.
Yantras means any physical form which can carry a charge of symbolism. Symbols of yantras refer to something denser and more real than the everyday world. They convey energy realities which are so inclusive and emotionally exciting as to go far beyond the limits of any ordinary object we can recognize from everyday human experience. The Shree yantra is the greatest and most complex of these. It has many subdivisions, and lesser diagrams may particularize and present its component forces.
Yantra is an geometric diagram whose numbers and circles have to be understood.It is definitely not a magical or jadoo-toona as is commonly belived.It is scientific.Yantra restrains, regulates, modulates, subdues, and sublimates all miseries born of desire, anger, hate, greed, love and other entities.
The fundamental is doing yourself and reap the results for better healthy living.
The swastika (from sanskrit svastika ???????? ) is an equilateral cross with its arms bent at right angles, in either right-facing (?) or left-facing (?) forms. The swastika can also be drawn as a traditional swastika, but with a second 90° bend in each arm.
(Yantra that keeps death away) This yantra shields the life and keeps death away due to a disease or accident. When doctors are unable to save a patient, this yantra saves him. Diseases are also cured by it. This yantra can be used in both static and mobile conditions.
Gayatri yantra is regarded as a great source of energy that eradicates bad luck and generates good fortune. The worship of this yantra provides comforts in this world and a seat in Vishnu lok. The results of bad deeds of many are eliminated and divine knowledge is generated. This yantra should be established in a static position Gayatri is mother of all knowledge. Hence worshipping her makes one intelligent in all fields and grants power to cure all ailments.
This yantra is a symbol of 12 names of lord Ganesh that give success in every respect. All jobs such as marriage, start of studies, commencement of construction of home, entry in home get completed successfully without any hurdle by worship of this yantra during difficult days. Apart from it, establishment of this yantra at home, its daily worship removes all hurdles.
It is the topmost of all yantras and grants all boons. Deity is Godess Mahalakshmi. Each triangle has its own power which when activated can even give enlightenment. Famous temples of India like Dwarka, Tirupati Balaji, Shreenathji, Kedarnath, Badrinath etc all have this yantra installed.