Digamsa Yantra PDF Print E-mail
Written by Yogesh Soman   
Sunday, 26 March 2006 01:07

Digamsa Yantra

A Digamsa yantra, consisting of two cylindrical walls surrounding a central pillar, measures the angle of azimuth of a celestial body. Its central pillar as well as its walls are engraved in degrees and minutes at their top surfaces. Cross wires are stretched between the cardinal points marked over the outer wall. The observer uses one or more strings with one end tied to a knob on the pillar and the other end to stone pebbles suspended over the walls. With these strings, the observer defines a vertical plane containing the cross-wire and the object in the sky. The angular distance of the vertical plane from the north point, read on the scales, indicates the azimuth of the body. It was developed by Jai Singh independently. Built only at Jaipur, Varanasi and Ujjain.

Last Updated on Sunday, 26 March 2006 01:16