The Astronomical Observatories of Jai Singh c9.s1.19

c9.s1.19

31. The Digamśa Yantra (‘Azimuth instrument’), although not actually mentioned by Jai Singh in the preface, is given, however, in Jagannāth’s list (see p. 3). It is a simple and useful instrument, and examples of it still exist at Jaipur, Ujjain and Benares. The instrument consists of a pillar surrounded by two circular walls (see plates XXI and XXVI, DD). The central pillar is generally about 4 feet high, and the inner wall the same height, while the outer wall is twice that height.