[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) › c7.5 # The Astronomical Observatories of Jai Singh c7.5 The Astronomical Observatories of Jai Singh c7.5 - **Language:** English ### [c7.5](https://indike.org/pramana/ins.science.kaye-1918.c7.5) The invention of this instrument is usually attributed to Ibrāhīm b. Yaḥyā al-Naqqāsh (the engraver), born at Cordova, and who lived from about A.D. 1029 to 1087.⁴ He was known as al-Zarqālī (Arzachel) and his instrument was called al-ṣafīḥat al-zarqāliya “the tablet of al-Zarqālī” and was famous in mediaeval Europe under the name Saphaea Arzachelis. - [Previous: c7.4](https://indike.org/pramana/ins.science.kaye-1918.c7.4) - [Next: c7.6](https://indike.org/pramana/ins.science.kaye-1918.c7.6) - [Up: c7](https://indike.org/pramana/ins.science.kaye-1918.c7) --- Source: [https://indike.org/pramana/ins.science.kaye-1918.c7.5](https://indike.org/pramana/ins.science.kaye-1918.c7.5) · Pramāṇa