Samyat Yantra

Over 30 metres in height, the big sundial is the most impressive and the biggest device. The ramp that forms the indicator is orientated to the north. It's gradient of 27 degrees is equivalent to the latitude of Jaipur. Thus the ramp points exactly to the Celestial North Pole. The shadow of the indicator falls of the wing-shaped western and eastern scales. They are made of marble as the side edges of the indicator are, and covered with delicate measuring divisions. According to the size and architectural precision, the shadow shows the local time accurate within four minutes. Using a pointing stick accuracy reaches a few seconds.

Samyat Yantra: gnomonSamyat Yantra: eastern scale

On the left the ramp over 30 metres in height.
On the right the end of the eastern scale in the late afternoon.