he Jantar Mantar monument in Jaipur, Rajasthan may be a assortment of 19 subject area astronomical instruments, engineered by the Hindu king Sawai Jai Singh II, and completed in 1734 metallic element. It options the world's largest stone timekeeper, and may be a United Nations agency World Heritage website. situated close to town Palace and Hawa Mahal of Jaipur, the monument options masonry, stone and brass instruments that were engineered exploitation uranology and instrument style principles of ancient Hindu Sanskritic language texts. The instruments enable the observation of astronomical positions with the eye. The monument expresses subject area innovations, further because the returning along of concepts from completely different non secular and social beliefs in eighteenth century Republic of India. The observatory is associate example of the Ptolemaic point uranology that was shared by several civilizations. The monument options instruments operational in every of the 3 main classical celestial coordinate systems: the horizon-zenith native system, the equatorial system and also the great circle system.