The Astronomical Observatories of Jai Singh c11.s2.t1.24

c11.s2.t1.24

Rām Yantra.—There are four instruments in white marble (plate XXI and figure 59), but all of them are quite modern (? 1891), and were made according to Jagannāth's instructions. In principle they are exactly the same as the instruments at Delhi, but are much smaller, the larger pair being 23 feet 11 inches in diameter. The sectors are twelve in number, occupying 12° each in one instrument, and 18° in the other. For an explanation of the construction see p. 37.