A visit to Jaipur is incomplete without a visit to the historic Jantar Mantar. It is one of the five observatories built by Sawai Jai Singh in 1718. It houses a huge collection of astronomical ins ...
Pre-telescopic astronomical instruments at Jantar Mantar from the 18th century are ... Then lead inking of the markings will be done to make it easily decipherable. This work should be done ...