Tag: pata yantra

Pata Yantra is a traditional Indian astronomical instrument used for measuring the altitude of celestial bodies. It is a simple instrument consisting of a graduated arc and a plumb line. The arc is usually made of wood or metal and is divided into degrees. The plumb line is attached to the center of the arc and hangs freely. When the instrument is held vertically, the plumb line indicates the angle of elevation of the celestial body being observed.