photo365 – Day 363
This is one of the many instruments of the Jantar Mantar in Jaipur. They were used as astronomical instruments for measuring time, predicting eclipses and tracking stars. It was often used to determine auspecious dates for significant events such as weddings.
There is more information available here http://en.wikipedia.org/wiki/Jantar_Mantar_(Jaipur)
You can see every photo in the Photo365 project here: http://bit.ly/2014photo365