[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [Yantras or Mechanical Contrivances in Ancient India](https://indike.org/pramana/ins.science.raghavan-1952) › c2.161 # Yantras or Mechanical Contrivances in Ancient India c2.161 Yantras or Mechanical Contrivances in Ancient India c2.161 - **Language:** English ### [c2.161](https://indike.org/pramana/ins.science.raghavan-1952.c2.161) The next topic Bhoja deals with is \*Bīja\*. \*Bīja\* means a constituent element. The constituent elements of a yantra are four: Earth, Water, Fire and Air, Ether being the basis and medium of action, \*Āśraya\* (5). - [Previous: c2.160](https://indike.org/pramana/ins.science.raghavan-1952.c2.160) - [Next: c2.162](https://indike.org/pramana/ins.science.raghavan-1952.c2.162) - [Up: c2](https://indike.org/pramana/ins.science.raghavan-1952.c2) ## Linked texts (1) - [Samarāṅgaṇasūtradhāra](https://indike.org/pramana/in.art.silpa.samaranganasutradhara.31.5) — Bhoja, Sanskrit --- Source: [https://indike.org/pramana/ins.science.raghavan-1952.c2.161](https://indike.org/pramana/ins.science.raghavan-1952.c2.161) · Pramāṇa