A short insight into the long forgotten history of Great Triangulation Survey of the Indian Subcontinent from 1802 to 1867. #GTS #Everest #RadhanathSikdar

Various Sources & Reference
https://en.wikipedia.org/wiki/Great_T...
Historical Records of the Survey of India Vol III By Col RH Phillimore
Indian Journal of History of Science, 50.4 (2015) 642645 Trigonometrical Survey of India and Naming of Peak XV as Mt. Everest
www.rangandutta.info
G & RB Section of Survey of India
Lambton, William (1811). "An account of the Trigonometrical Operations in crossing the peninsula of India, and connecting Fort St. George with Mangalore"
Markham, Clements (1878). A Memoir on the Indian Surveys