http://blogs.esri.com/Info/blogs/geographymatters/archive/2008/08/15/from-theodolites-to-gis.aspxOriginally set up in 1767, the Survey of India is the government's oldest department and in charge of all of the its mapping and surveying efforts. Since coordinating the Great Trigonometric Survey, it has expanded over the years to 23 geospatial dataenCommunityServer 2.1 SP2 (Debug Build: 61120.2)