Map of India illustrative of the pendulum operations of the Great Trigonometrical Survey of India in the years 1865-73.
Creator:
Survey of India.
Publisher:
Surveyor General's Office
Description:
March 1879. 1 map ; 51 x 46 cm. Scale [ca. 1:7,920,000]. Relief shown by shading and spot heights. Scanned copy of a map in Account of the Operations of the Great Trigonometrical Survey of India, Volume V, 1979; Annex QB296.I396++.