[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [The Astronomical Observatories of Jai Singh](https://indike.org/pramana/ins.science.kaye-1918) › c10.63 # The Astronomical Observatories of Jai Singh c10.63 The Astronomical Observatories of Jai Singh c10.63 - **Language:** English ### [c10.63](https://indike.org/pramana/ins.science.kaye-1918.c10.63) Jai Singh tells us that, at first, he constructed at Delhi brass instruments of the astrolabe type in accordance with the Muslim books.⁷ These he found to be unsatisfactory, and, therefore, he constructed “instruments of his own invention, such as Jai Prakāś and Rām Yantra and Samrāṭ Yantra . . . of stone and lime of perfect stability, etc.” In Jai Singh’s time, therefore, the observatory probably consisted of the Samrāṭ Yantra, the Jai Prakāś, the Rām Yantra, a mural quadrant, and some metal instruments. Of the present buildings, possibly, the Miśra Yantra was added by Madhu Singh, “who inherited no small portion of his father’s love of science.”¹ - [Previous: c10.62](https://indike.org/pramana/ins.science.kaye-1918.c10.62) - [Next: c10.64](https://indike.org/pramana/ins.science.kaye-1918.c10.64) - [Up: c10](https://indike.org/pramana/ins.science.kaye-1918.c10) --- Source: [https://indike.org/pramana/ins.science.kaye-1918.c10.63](https://indike.org/pramana/ins.science.kaye-1918.c10.63) · Pramāṇa