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A map showing the triangles and transects used in the Great Trigonometrical Survey (1802–1852), produced in 1870. Surveyor-General of India George Everest (b.1790-d.1866) under whom GTS was completed and Mount Everest was named in his honour.
In 1875, the decision was taken that the Survey budget should be reduced from 240,000 to 200,000 pounds. This resulted in a reorganization under Surveyor-General Colonel J.T. Walker to amalgamate the Great Trigonometrical, Topographical and Revenue Surveys into the Survey of India. [9] Survey towers used by George Everest to elevate the instruments
European maps become more accurate with the Age of Exploration and Portuguese India from the 16th century. The first modern maps were produced by the Survey of India, established in 1767 by the British East India Company. The Survey of India remains in continued existence as the official mapping authority of the Republic of India.
A topographic survey is typically based upon a systematic observation and published as a map series, made up of two or more map sheets that combine to form the whole map. A topographic map series uses a common specification that includes the range of cartographic symbols employed, as well as a standard geodetic framework that defines the map ...
English: 1947 map of India published by Survey of India Annotations from the legend: First edition 1938; 2nd 1947. Refer to this map as:— 70-MILE MAP INDIA SECOND EDITION; Published under the direction of Brigadier G. F. Heaney, C. B. E., Surveyor General of India, 1947. PRINTED AT THE SURVEY OF INDIA OFFICES (PLO). Note:
This work has been released into the public domain by its author, Survey of India.This applies worldwide. In some countries this may not be legally possible; if so: Survey of India grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
Lieutenant-Colonel William Lambton FRS (c. 1753 – 20 or 26 [1] January 1823 [2]) was a British soldier, surveyor, and geographer who began a triangulation survey in 1800-1802 that was later called the Great Trigonometrical Survey of India. His initial survey was to measure the length of a degree of an arc of the meridian so as to establish ...
Scope – NPOV maps related to India (post-1947) and historical pre-Independence India (includes the South Asian nations of Pakistan, Bangladesh, Sri Lanka, Nepal and Bhutan). The secondary goal would be to get NPOV maps for Pakistan, PRC, Afghanistan and Bhutan since they border disputed territories of India.