The Astronomical Observatories of Jai Singh c10.43

c10.43

40. To the north-west of the Samrāṭ Yantra, and some 140 feet away, is the Miśra Yantra, or ‘mixed instrument,’ so named because it combines in one building four separate instruments. Of these the Niyat Chakra occupies the middle of the building, and consists of a gnomon with two graduated semicircles on either side (figure 50). These semicircles lie in planes inclined to the plane of the Delhi meridian at angles of 77° 16′ W., 68° 34′ W., 68° 1′ E. and 75° 54′ E.¹