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Vedhsala
This Vedhsala (observatory) was constructed by Savai Raja Jayasingh between 1725 to 1730 A.D. Similar observatories were constructed by Raja Jayasingh at four other places-Delhi, Jaipur, Mathura and Varanasi.

Samrat yantra, Nadivalaya yantra, Digansha yantra and Yamyottara-Bhitti yantra and the main instruments constructed in this observatory. Motions and orbits of the panel are studied through these instruments. On this count people call it Yantra-Mahal also.

This observatory was renovated by Madhav Rao Scindia the then Maharaja of earstwhile Gwalior State in 1923 A.D. Astronomied studies of planetary motions are still conducted in this observatory under the department of education and an ephemeris in published every year. In this way this is the only observatory among the observatories of Jayasingh where these masonic instruments are even today utilised for astronomical studies.