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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.

Earth, Moon and Planets was a book written by Fred Lawrence Whipple and originally published in 1947. It has 302 pages. The book covers various aspects of the Earth, Moon, and planets within our solar system, like the physical characteristics of these bodies, their orbits, geological features, atmospheric properties, and the processes that shaped them.

This fond contains correspondences related to electrical installations in Kodaikanal Observatory

The book General Astronomy was written by ?Sir Harold Spencer Jones. It was published in ?1922. This book contains 392 pages and covers various topics in astronomy. The topics mentioned in the book are related to ?celestial bodies, planetary motion, telescopes, and the solar system. It also includes information on stars, galaxies, and other astronomical phenomena.

The book is a collection of memoirs on the various modes according to which the nations of southern parts of India divide time written by Lieutenant Colonel John Warren in 1825.

This fond includes astronomical observations supplement, and the content was in French language.

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

This fond is related to prisms from Kodaikanal Observatory

Madras and Kodaikanal Reports for the years 1898-1921, except 1899-1900 annual report.

The fond contains observations notes on Madras meridian observations recorded during 1874-1904 from Madrsa Observatory. The observations concern minor planets, stars, equations for the stars i, j, and c, corrections to observed magnetic declination, the Moon and planets, R. Andromeda, Asia, minor planets, and apparent polar distance of stars.