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An index chart

An index chart

C019/5809

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Credit

BRITISH LIBRARY / SCIENCE PHOTO LIBRARY BRITISH LIBRARY / SCIENCE PHOTO LIBRARY

Caption

Index Chart to the Great Trigonometrical Survey of India. Sh. Image taken from Index Chart to the Great Trigonometrical Survey of India, showing net work of Triangulation Completed to 1st May, 1870 (--1st October, 1895). Scale, 96 miles = 1 inch. Originally published in Calcutta : Surveyor General's Office, 1870-1895.

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