IMG_3561

The triangular wall of the Yantra has scale marked 0 degree to 23 30' degrees North and South for measuring the declination, witch is the angulalr position of a celestial object with respect to the equator.

The Virhat Samart Yantra is the largest of all of Jai Singh's instruments, with a height of about 30m and a base length of 45m. The radius of each of the quadrants is
15m.