The Astronomical Observatories of Jai Singh c8.16

c8.16

22. At Jaipur are two large single disc astrolabes 7 feet in diameter—one made of some sixty sheets of iron rivetted together (figure 28), and the other of brass, patched up with lead (figure 29). From the iron instrument the graduations have disappeared. The brass instrument is *tāmm* (complete) for latitude 27°N. It has an ecliptic circle, and a tube sighter of modern workmanship. These two instruments may possibly be of the original metal instruments referred to by Jai Singh (see p. 12). If so they were probably brought from Delhi.