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The fond contain correspondence of the annual reports of scientific works at Kodaikanal

The fonds contain correspondence regarding various instruments and their reading in the Kodaikanal Observatory

This fond is related to Nizamiah Observatory

This fond contains items from the proceedings of the Madras Government

The fond contain correspondence related to the building, as well as plans and estimates for the sliding roof of the spectroheliograph building.

This fond contains items related to the telescope purchased by Nawab Zafar Jung of Hyderabad.

This font is regarding public works in Kodaikanal Observatory

The fond contains correspondence related to Signaling Time from 1904 to 1923. It has letters from Thomas Royds, Gilbert T. Walker and the Director General of Telegraphs.

This item was an instrument used to measure time. A wire rope is wound around a drum which unwinds in a fixed time under gravity. A maker which moves horizontally, marks out the time elapsed on a linear scale. This instrument was used before the invention of the pendulum clock for Astronomical measurements at the Madras Observatory.

The title "Les Observatoires Astronomiques" can be translated to Astronomical Observatories. This book consists of astronomical observations from the Royal Observatory of Belgium. It is written by P.Stroobant, E .Delporte, J. Delvosal and F. Moreau, and H. L. Vanderlinden. It is published in 1836