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This is a reply letter to T. Royds stating the length and width of the morse tape required for chronograph

This is a circular letter from A.G. Cardew, AG Secretary to Government, regarding adopting standard time for railways and telegraph offices. The standard time in India will be 5.30 hours ahead of Greenwich Mean Time and 9 minutes ahead of Madras time. In Burma, it will be 6.30 hours ahead of Greenwich Mean Time and 5 minutes and 23 seconds earlier than Rangoon time. The change will be introduced at midnight between June 30 and July 1, 1905.

This fond contains correspondences related to clocks in Madras and 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.

This is a letter from Charles Michie Smith, the Director of Kodaikanal and Madras Observatories to Gilbert T. Walker, the meteorological reporter to the government of India acknowledging the receipt of the drum.

This is a reply letter from Charles Michie Smith, the Director of Kodaikanal and Madras Observatories to Gilbert T. Walker, the meteorological reporter to the government of India regarding the inadequacy of a single clock and along with the letter is a proposal stating the details about the required clocks for the Madras Observatory.

This is a letter from the Director of Kodaikanal and Madras Observatories to the meteorological reporter to the government of India. It requests for the access for the spare drum.

This letter was about receiving the time signal from some intermediate station considered useless.

This is a letter from the Director of Kodaikanal and Madras Observatories to the Meteorological Reporter to the Government of India and the Director General of Indian Observatories regarding the new standard signalling time arrangement. The Government of Madras has also accepted the standard time for local signals.