 The whole work of the ‘Carte due Cite’ Hyderabad Section was completed under the direction of T.P.Huascaran, who had published the remaining volumes of the astrographic catalog and this brought the work to a successful conclusion.In 1923, the equatorial telescope by G. Rubb was erected and a Milne-Shaw seismograph was installed for the study of earthquakes and a second machine was added in 1929.