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This document contains a bill from Messrs Adam Hilger to Solar Physics Observatory for 60° flint prisms, plane-parallel plates and plane-parallel plates of green colour.

This document contains details about an astronomical telescope that was indigenously constructed. It also includes testimonials about the telescope.

This is a document containing the list of instruments available in the store at Kodaikanal Observatory as of November 1925

This fond contains letters and documents related to the meteorology in Kodaikanal during 1898 to 1925

The letter is from Adam Hilger Ltd to the Director-General of Observatories Simla regarding various optical parts despatched to Kodaikanal by the order from John Evershed.

The letter is from Adam Hilger Ltd to the Director-General of Observatories Simla, informing that the parcel post has despatched the optical parts ordered.

The letter is from the Director-General of Observatories to John Evershed, Director of Kodaikanal and Madras Observatories, regarding Messrs Adam Hilger's second bill dated March 1, 1914, for the repairing of photo micrometer belonging to the Kodaikanal Observatory. It is stated that a bill of exchange has paid the amount.

The letter is from E. C. J. Bond to the Director of Kodaikanal and Madras Observatories informing that the earth inductor and galvanometer have been despatched by the insured parcel and asking for arrangements to be made for the agent to collect the parcel at the railway station and to be forwarded.

The letter is from E. C. J. Bond to the Director of Kodaikanal and Madras Observatories informing that the spare earth inductor and galvanometer are stored at Dehradun and other related specifics.

The letter is from E. C. J. Bond to the Director of Kodaikanal and Madras Observatories requesting that an earth inductor and galvanometer be sent to England as soon as possible as new patterns for new ones they are indenting for.