User:Monowarkamal

The [Survey of Bangladesh] (SOB) is the National mapping authority in Bangladesh. The agency is administrated under the control of Ministry of Defence, headed by The Surveyor General of Bangladesh. After the liberation of Bangladesh, national survey and mapping organization, Survey of Bangladesh was reorganized from the regional office of Pakistan, initially with 2 Directorates, 2 field paries, 1 Drawing office, 1 Photogramatic office (Regional office for East Pakistan) and geodetic department.

SOB possess authority to all Aerial Photographs and other Topographic maps of Bangladesh. They undertake geodetic, topographical and aerial surveys from time to time and keep records of basic geodetic and levelling networks. Topomaps are prepared and updated and verified by ground surveys. SOB's regular responsibilities is to revise and upgrade the topographical basemaps 1:50,000 scale.

SOB also hold the authority of conducting;

International Boundary Mapping (Along Chittagong Hill Tract Region) Surveys of the Cantonments Project Mapping Mapping Service to various Ministries, department and agencies Processing and Preservation of Aerial Photographs Production of Maps in various scale according to the need of various developments

The department started its functioning as "Bengal Survey" on 1st January 1767 in undivided India and conducted survey and mapping activities until 1947. After the partition of the sub continent on 14th August 1947, the organization started its new role as Survey of Pakistan and established a regional office at Dhaka.

Aerial photographs in Bangladesh are used as per the 'Rules for Classification, Custody and Issue of Aerial Photographs' issued by the Ministry of Defence, Government of the People's Republic of Bangladesh. It is broadly divided into two categories: 'Classified Photographs' and 'Public Photographs'. The aerial photographs containing security items are marked as 'Classified' and the 'Public' aerial photographs that do not contain security items.

Topographic maps of the Bengal were generated during the last quarter of 18th century covering whole Bangladesh at a scale of 1:50,000. Map updating is a regular process and done in every five to seven years. At present SOB is digitally updating the base map of Bangladesh. SOB publishes all the maps from its own offset printing press and the products are available in its sales centre at SOB campus located in Tejgaon Industrial Area, Dhaka.