The Astronomical Observatories of Jai Singh c10.14

c10.14

According to Jai Singh, the *Samrāṭ Yantra* was built of stone and lime.⁴ Hunter and Thorn say that the edges of the gnomon and quadrants were of white marble, and von Orlich speaks of marble staircases (see page 48). The quadrants are now faced with lime, but the time graduations are well marked with a soft black stone, neatly inlaid into the face of the quadrant. The graduations on the edges of the gnomon are scratched into the lime plaster surface and are becoming obliterated.