[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) › c8.26 # The Astronomical Observatories of Jai Singh c8.26 The Astronomical Observatories of Jai Singh c8.26 - **Language:** English ### [c8.26](https://indike.org/pramana/ins.science.kaye-1918.c8.26) 24. At Jaipur I was shown a modern Hindu astrolabe or Yantra Rāj, dated Samvat 1799 (=A.D. 1877). It is a single disc \*thulthi\* or tripartite instrument for latitude 27° N., with an ecliptic circle and ruler. On the obverse of the disc are engraved azimuth lines for 30°, 60° and 90°, and also the temporal hour lines, and also the names of the following stars:— - [Previous: c8.25](https://indike.org/pramana/ins.science.kaye-1918.c8.25) - [Next: c8.27](https://indike.org/pramana/ins.science.kaye-1918.c8.27) - [Up: c8](https://indike.org/pramana/ins.science.kaye-1918.c8) --- Source: [https://indike.org/pramana/ins.science.kaye-1918.c8.26](https://indike.org/pramana/ins.science.kaye-1918.c8.26) · Pramāṇa