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Letter to the Director-General of Observatories regarding the specification of a new Micrometer for the Madras Transit Instrument

The letter is from the Director of Kodaikanal & Madras Observatories to The Director General of observatories, Simla, forwarding the plan and estimate of Rs. 175/- for erecting a verandah in front of the spectroheliograph and requesting the sanction.

The letter is to the Director General of Observatories regarding some new grating to make it the same as another letter.