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 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 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 fond contains correspondences related to clocks in Madras and Kodaikanal Observatory

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