[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) › c5.81 # The Astronomical Observatories of Jai Singh c5.81 The Astronomical Observatories of Jai Singh c5.81 - **Language:** English ### [c5.81](https://indike.org/pramana/ins.science.kaye-1918.c5.81) ⁷ The instruments used by Flamsteed (1646-1719) were an iron sextant of 6 feet radius; a three-foot quadrant; a mural arc of 140 degrees and radius 7 feet, 'divided with hitherto unapproached accuracy,' and with which all his most valuable work was executed; two clocks and two telescopes. For further particulars of European instruments, see p. 83. - [Previous: c5.80](https://indike.org/pramana/ins.science.kaye-1918.c5.80) - [Next: c5.82](https://indike.org/pramana/ins.science.kaye-1918.c5.82) - [Up: c5](https://indike.org/pramana/ins.science.kaye-1918.c5) --- Source: [https://indike.org/pramana/ins.science.kaye-1918.c5.81](https://indike.org/pramana/ins.science.kaye-1918.c5.81) · Pramāṇa